./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3588258899

<...>
vailable)
[pid 15014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15015] <... futex resumed>)        = 0
[pid 15015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15015] <... futex resumed>)        = 0
[pid 15015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15015] <... futex resumed>)        = 0
[pid 15015] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15014] exit_group(0)               = ?
[pid 15015] <... futex resumed>)        = ?
[pid 15015] +++ exited with 0 +++
[pid 15014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15016 attached
, child_tidptr=0x55557060c690) = 15016
[pid 15016] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15016] setpgid(0, 0)               = 0
[pid 15016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15016] write(3, "1000", 4)         = 4
[pid 15016] close(3)                    = 0
executing program
[pid 15016] write(1, "executing program\n", 18) = 18
[pid 15016] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15016] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15016] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15016] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15017 attached
 => {parent_tid=[15017]}, 88) = 15017
[pid 15017] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15017] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15017] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15016] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15017] <... futex resumed>)        = 0
[pid 15016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15017] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15016] <... futex resumed>)        = 0
[pid 15016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15017] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15016] <... futex resumed>)        = 0
[pid 15016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15016] <... futex resumed>)        = 0
[pid 15016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15017] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15016] <... futex resumed>)        = 0
[pid 15016] exit_group(0)               = ?
[pid 15017] +++ exited with 0 +++
[pid 15016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15018
./strace-static-x86_64: Process 15018 attached
[pid 15018] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15018] setpgid(0, 0)               = 0
[pid 15018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 15018] write(3, "1000", 4)         = 4
[pid 15018] close(3)                    = 0
[pid 15018] write(1, "executing program\n", 18) = 18
[pid 15018] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15018] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15018] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15019 attached
 => {parent_tid=[15019]}, 88) = 15019
[pid 15019] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15019] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15018] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15019] <... futex resumed>)        = 0
[pid 15018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15018] <... futex resumed>)        = 0
[pid 15018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15019] <... futex resumed>)        = 0
[pid 15019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15019] <... futex resumed>)        = 0
[pid 15018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15019] <... futex resumed>)        = 0
[pid 15019] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15018] exit_group(0)               = ?
[pid 15019] <... futex resumed>)        = ?
[pid 15019] +++ exited with 0 +++
[pid 15018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15020
./strace-static-x86_64: Process 15020 attached
[pid 15020] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15020] setpgid(0, 0)               = 0
[pid 15020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15020] write(3, "1000", 4)         = 4
[pid 15020] close(3)                    = 0
[pid 15020] write(1, "executing program\n", 18executing program
) = 18
[pid 15020] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15020] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15020] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15021 attached
 => {parent_tid=[15021]}, 88) = 15021
[pid 15021] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15020] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15021] <... futex resumed>)        = 0
[pid 15021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15021] <... futex resumed>)        = 0
[pid 15021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15021] <... futex resumed>)        = 0
[pid 15020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15021] <... futex resumed>)        = 0
[pid 15020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15021] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15020] exit_group(0)               = ?
[pid 15021] <... futex resumed>)        = ?
[pid 15021] +++ exited with 0 +++
[pid 15020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15022
./strace-static-x86_64: Process 15022 attached
[pid 15022] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15022] setpgid(0, 0)               = 0
[pid 15022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15022] write(3, "1000", 4)         = 4
[pid 15022] close(3)                    = 0
[pid 15022] write(1, "executing program\n", 18executing program
) = 18
[pid 15022] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15022] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15022] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15022] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15023]}, 88) = 15023
[pid 15022] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15023 attached
 <unfinished ...>
[pid 15023] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15023] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15022] <... futex resumed>)        = 0
[pid 15022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15022] <... futex resumed>)        = 0
[pid 15022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15022] <... futex resumed>)        = 0
[pid 15022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15023] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15022] <... futex resumed>)        = 0
[pid 15022] exit_group(0)               = ?
[pid 15023] +++ exited with 0 +++
[pid 15022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15024
./strace-static-x86_64: Process 15024 attached
[pid 15024] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15024] setpgid(0, 0)               = 0
[pid 15024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15024] write(3, "1000", 4)         = 4
[pid 15024] close(3)                    = 0
[pid 15024] write(1, "executing program\n", 18executing program
) = 18
[pid 15024] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15024] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15024] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15024] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15025 attached
 => {parent_tid=[15025]}, 88) = 15025
[pid 15025] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15025] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15024] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15025] <... futex resumed>)        = 0
[pid 15025] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15025] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15024] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15025] <... futex resumed>)        = 0
[pid 15025] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15025] <... futex resumed>)        = 0
[pid 15025] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15024] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15025] <... futex resumed>)        = 0
[pid 15025] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15025] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15024] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15024] exit_group(0)               = ?
[pid 15025] <... futex resumed>)        = ?
[pid 15025] +++ exited with 0 +++
[pid 15024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15026
./strace-static-x86_64: Process 15026 attached
[pid 15026] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15026] setpgid(0, 0)               = 0
[pid 15026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15026] write(3, "1000", 4)         = 4
[pid 15026] close(3)                    = 0
executing program
[pid 15026] write(1, "executing program\n", 18) = 18
[pid 15026] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15026] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15026] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15026] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15027 attached
 <unfinished ...>
[pid 15027] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15027] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15027] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15026] <... clone3 resumed> => {parent_tid=[15027]}, 88) = 15027
[pid 15026] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15027] <... futex resumed>)        = 0
[pid 15027] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15027] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15027] <... futex resumed>)        = 0
[pid 15026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15027] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15027] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15026] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15027] <... futex resumed>)        = 0
[pid 15026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15027] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15027] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15026] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15027] <... futex resumed>)        = 0
[pid 15026] <... futex resumed>)        = 1
[pid 15027] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15026] <... futex resumed>)        = 0
[pid 15027] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15026] exit_group(0)               = ?
[pid 15027] <... futex resumed>)        = ?
[pid 15027] +++ exited with 0 +++
[pid 15026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15028
./strace-static-x86_64: Process 15028 attached
[pid 15028] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15028] setpgid(0, 0)               = 0
[pid 15028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15028] write(3, "1000", 4)         = 4
[pid 15028] close(3)                    = 0
executing program
[pid 15028] write(1, "executing program\n", 18) = 18
[pid 15028] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15028] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15028] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15028] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15029 attached
 => {parent_tid=[15029]}, 88) = 15029
[pid 15029] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15029] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15029] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15028] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15029] <... futex resumed>)        = 0
[pid 15029] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15029] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15029] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15028] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15029] <... futex resumed>)        = 0
[pid 15028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15029] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15028] <... futex resumed>)        = 0
[pid 15029] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15029] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15028] <... futex resumed>)        = 0
[pid 15029] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15029] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15028] <... futex resumed>)        = 0
[pid 15028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15029] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15028] <... futex resumed>)        = 0
[pid 15029] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15028] exit_group(0)               = ?
[pid 15029] <... futex resumed>)        = ?
[pid 15029] +++ exited with 0 +++
[pid 15028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15030 attached
, child_tidptr=0x55557060c690) = 15030
[pid 15030] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15030] setpgid(0, 0)               = 0
[pid 15030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15030] write(3, "1000", 4)         = 4
[pid 15030] close(3)                    = 0
[pid 15030] write(1, "executing program\n", 18executing program
) = 18
[pid 15030] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15030] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15030] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15031 attached
 <unfinished ...>
[pid 15031] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15031] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15030] <... clone3 resumed> => {parent_tid=[15031]}, 88) = 15031
[pid 15030] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15031] <... futex resumed>)        = 0
[pid 15030] <... futex resumed>)        = 1
[pid 15031] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15031] <... futex resumed>)        = 0
[pid 15030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15031] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15030] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15031] <... futex resumed>)        = 0
[pid 15031] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15031] <... futex resumed>)        = 0
[pid 15031] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15030] exit_group(0)               = ?
[pid 15031] <... futex resumed>)        = ?
[pid 15031] +++ exited with 0 +++
[pid 15030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15032
./strace-static-x86_64: Process 15032 attached
[pid 15032] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15032] setpgid(0, 0)               = 0
[pid 15032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15032] write(3, "1000", 4)         = 4
[pid 15032] close(3executing program
)                    = 0
[pid 15032] write(1, "executing program\n", 18) = 18
[pid 15032] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15032] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15032] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15032] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15032] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15032] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15033 attached
 <unfinished ...>
[pid 15033] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15033] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15033] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15032] <... clone3 resumed> => {parent_tid=[15033]}, 88) = 15033
[pid 15032] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15033] <... futex resumed>)        = 0
[pid 15033] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15033] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15033] <... futex resumed>)        = 0
[pid 15032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15033] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15033] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15032] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15033] <... futex resumed>)        = 0
[pid 15032] <... futex resumed>)        = 1
[pid 15033] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15033] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15033] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15032] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15033] <... futex resumed>)        = 0
[pid 15032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15033] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15032] <... futex resumed>)        = 0
[pid 15033] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15032] exit_group(0)               = ?
[pid 15033] <... futex resumed>)        = ?
[pid 15033] +++ exited with 0 +++
[pid 15032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15034 attached
, child_tidptr=0x55557060c690) = 15034
[pid 15034] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15034] setpgid(0, 0)               = 0
[pid 15034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15034] write(3, "1000", 4)         = 4
[pid 15034] close(3)                    = 0
[pid 15034] write(1, "executing program\n", 18executing program
) = 18
[pid 15034] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15034] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15034] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15034] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15035 attached
 <unfinished ...>
[pid 15035] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15035] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15035] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15034] <... clone3 resumed> => {parent_tid=[15035]}, 88) = 15035
[pid 15034] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15035] <... futex resumed>)        = 0
[pid 15035] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15035] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15035] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15034] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15035] <... futex resumed>)        = 0
[pid 15034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15035] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15035] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15034] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15035] <... futex resumed>)        = 0
[pid 15035] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15035] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15035] <... futex resumed>)        = 0
[pid 15035] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15035] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15034] exit_group(0)               = ?
[pid 15035] <... futex resumed>)        = ?
[pid 15035] +++ exited with 0 +++
[pid 15034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15036
./strace-static-x86_64: Process 15036 attached
[pid 15036] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15036] setpgid(0, 0)               = 0
[pid 15036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15036] write(3, "1000", 4)         = 4
[pid 15036] close(3)                    = 0
[pid 15036] write(1, "executing program\n", 18executing program
) = 18
[pid 15036] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15036] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15036] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15036] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15036] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15036] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15037 attached
 <unfinished ...>
[pid 15037] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15037] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15037] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15036] <... clone3 resumed> => {parent_tid=[15037]}, 88) = 15037
[pid 15036] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15037] <... futex resumed>)        = 0
[pid 15037] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15037] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15037] <... futex resumed>)        = 0
[pid 15036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15037] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15037] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15037] <... futex resumed>)        = 0
[pid 15037] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15037] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15037] <... futex resumed>)        = 0
[pid 15037] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15037] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15037] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15036] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15036] exit_group(0)               = ?
[pid 15037] <... futex resumed>)        = ?
[pid 15037] +++ exited with 0 +++
[pid 15036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15038
./strace-static-x86_64: Process 15038 attached
[pid 15038] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15038] setpgid(0, 0)               = 0
[pid 15038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15038] write(3, "1000", 4)         = 4
[pid 15038] close(3)                    = 0
executing program
[pid 15038] write(1, "executing program\n", 18) = 18
[pid 15038] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15038] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15038] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15038] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15038] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15038] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15039]}, 88) = 15039
[pid 15038] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15039 attached
 <unfinished ...>
[pid 15039] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15039] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15039] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15038] <... futex resumed>)        = 0
[pid 15038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15039] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15038] <... futex resumed>)        = 0
[pid 15038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15039] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15038] <... futex resumed>)        = 0
[pid 15038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15039] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15038] <... futex resumed>)        = 0
[pid 15038] exit_group(0)               = ?
[pid 15039] +++ exited with 0 +++
[pid 15038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15040
./strace-static-x86_64: Process 15040 attached
[pid 15040] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15040] setpgid(0, 0)               = 0
[pid 15040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15040] write(3, "1000", 4)         = 4
[pid 15040] close(3)                    = 0
[pid 15040] write(1, "executing program\n", 18executing program
) = 18
[pid 15040] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15040] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15040] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15040] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15040] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15040] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15041 attached
 => {parent_tid=[15041]}, 88) = 15041
[pid 15041] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15041] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15041] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15040] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15041] <... futex resumed>)        = 0
[pid 15041] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15041] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15041] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15040] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15041] <... futex resumed>)        = 0
[pid 15041] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15041] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15041] <... futex resumed>)        = 0
[pid 15041] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15041] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15041] <... futex resumed>)        = 0
[pid 15041] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15041] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15040] exit_group(0)               = ?
[pid 15041] <... futex resumed>)        = ?
[pid 15041] +++ exited with 0 +++
[pid 15040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15042 attached
, child_tidptr=0x55557060c690) = 15042
[pid 15042] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15042] setpgid(0, 0)               = 0
[pid 15042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15042] write(3, "1000", 4)         = 4
[pid 15042] close(3)                    = 0
[pid 15042] write(1, "executing program\n", 18executing program
) = 18
[pid 15042] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15042] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15042] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15042] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15042] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15042] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15043]}, 88) = 15043
[pid 15042] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15043 attached
 <unfinished ...>
[pid 15043] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15043] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15043] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15042] <... futex resumed>)        = 0
[pid 15042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15043] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15042] <... futex resumed>)        = 0
[pid 15042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15043] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15042] <... futex resumed>)        = 0
[pid 15042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15043] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15042] <... futex resumed>)        = 0
[pid 15042] exit_group(0 <unfinished ...>
[pid 15043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15042] <... exit_group resumed>)   = ?
[pid 15043] <... futex resumed>)        = ?
[pid 15043] +++ exited with 0 +++
[pid 15042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15044 attached
 <unfinished ...>
[pid 15044] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15044] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15044
[pid 15044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15044] write(3, "1000", 4)         = 4
[pid 15044] close(3)                    = 0
[pid 15044] write(1, "executing program\n", 18executing program
) = 18
[pid 15044] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15044] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15044] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15044] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15045 attached
 => {parent_tid=[15045]}, 88) = 15045
[pid 15045] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15045] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15045] <... futex resumed>)        = 0
[pid 15045] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15045] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15044] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15045] <... futex resumed>)        = 0
[pid 15045] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15045] <... futex resumed>)        = 0
[pid 15045] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15045] <... futex resumed>)        = 0
[pid 15045] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15044] exit_group(0)               = ?
[pid 15045] <... futex resumed>)        = ?
[pid 15045] +++ exited with 0 +++
[pid 15044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15046
./strace-static-x86_64: Process 15046 attached
[pid 15046] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15046] setpgid(0, 0)               = 0
[pid 15046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15046] write(3, "1000", 4)         = 4
[pid 15046] close(3)                    = 0
executing program
[pid 15046] write(1, "executing program\n", 18) = 18
[pid 15046] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15046] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15046] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15046] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15047 attached
 <unfinished ...>
[pid 15047] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15047] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15046] <... clone3 resumed> => {parent_tid=[15047]}, 88) = 15047
[pid 15046] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15047] <... futex resumed>)        = 0
[pid 15046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15047] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15047] <... futex resumed>)        = 0
[pid 15047] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15047] <... futex resumed>)        = 0
[pid 15046] <... futex resumed>)        = 1
[pid 15047] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15047] <... futex resumed>)        = 0
[pid 15046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15047] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15046] <... futex resumed>)        = 0
[pid 15046] exit_group(0)               = ?
[pid 15047] <... futex resumed>)        = ?
[pid 15047] +++ exited with 0 +++
[pid 15046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15048
./strace-static-x86_64: Process 15048 attached
[pid 15048] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15048] setpgid(0, 0)               = 0
[pid 15048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15048] write(3, "1000", 4)         = 4
[pid 15048] close(3)                    = 0
[pid 15048] write(1, "executing program\n", 18executing program
) = 18
[pid 15048] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15048] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15048] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15048] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15048] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15048] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15049 attached
 <unfinished ...>
[pid 15049] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15048] <... clone3 resumed> => {parent_tid=[15049]}, 88) = 15049
[pid 15048] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15049] <... futex resumed>)        = 0
[pid 15049] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15049] <... futex resumed>)        = 0
[pid 15048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15049] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15048] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15049] <... futex resumed>)        = 0
[pid 15049] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15049] <... futex resumed>)        = 0
[pid 15048] <... futex resumed>)        = 1
[pid 15049] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15049] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15048] <... futex resumed>)        = 0
[pid 15049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15048] exit_group(0)               = ?
[pid 15049] <... futex resumed>)        = ?
[pid 15049] +++ exited with 0 +++
[pid 15048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15050
./strace-static-x86_64: Process 15050 attached
[pid 15050] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15050] setpgid(0, 0)               = 0
[pid 15050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15050] write(3, "1000", 4)         = 4
[pid 15050] close(3)                    = 0
[pid 15050] write(1, "executing program\n", 18executing program
) = 18
[pid 15050] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15050] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15050] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15050] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15051]}, 88) = 15051
./strace-static-x86_64: Process 15051 attached
[pid 15050] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15051] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15051] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15051] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15050] <... futex resumed>)        = 0
[pid 15050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15051] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15050] <... futex resumed>)        = 0
[pid 15050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15051] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15050] <... futex resumed>)        = 0
[pid 15050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15051] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15050] <... futex resumed>)        = 0
[pid 15051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15050] exit_group(0)               = ?
[pid 15051] <... futex resumed>)        = ?
[pid 15051] +++ exited with 0 +++
[pid 15050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15052
./strace-static-x86_64: Process 15052 attached
[pid 15052] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15052] setpgid(0, 0)               = 0
[pid 15052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15052] write(3, "1000", 4)         = 4
[pid 15052] close(3)                    = 0
[pid 15052] write(1, "executing program\n", 18executing program
) = 18
[pid 15052] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15052] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15052] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15052] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15052] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15052] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15053 attached
 <unfinished ...>
[pid 15053] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15053] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15052] <... clone3 resumed> => {parent_tid=[15053]}, 88) = 15053
[pid 15052] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15053] <... futex resumed>)        = 0
[pid 15053] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15053] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15053] <... futex resumed>)        = 0
[pid 15053] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15053] <... futex resumed>)        = 0
[pid 15053] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15053] <... futex resumed>)        = 0
[pid 15052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15053] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15052] exit_group(0)               = ?
[pid 15053] <... futex resumed>)        = ?
[pid 15053] +++ exited with 0 +++
[pid 15052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15054
./strace-static-x86_64: Process 15054 attached
[pid 15054] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15054] setpgid(0, 0)               = 0
[pid 15054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15054] write(3, "1000", 4)         = 4
[pid 15054] close(3)                    = 0
executing program
[pid 15054] write(1, "executing program\n", 18) = 18
[pid 15054] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15054] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15054] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15055]}, 88) = 15055
[pid 15054] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15055 attached
 <unfinished ...>
[pid 15055] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15055] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15055] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15054] <... futex resumed>)        = 0
[pid 15054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15055] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15054] <... futex resumed>)        = 0
[pid 15054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15055] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15055] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15054] <... futex resumed>)        = 0
[pid 15054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15055] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15054] <... futex resumed>)        = 0
[pid 15054] exit_group(0)               = ?
[pid 15055] +++ exited with 0 +++
[pid 15054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15056 attached
, child_tidptr=0x55557060c690) = 15056
[pid 15056] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15056] setpgid(0, 0)               = 0
[pid 15056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15056] write(3, "1000", 4)         = 4
[pid 15056] close(3)                    = 0
[pid 15056] write(1, "executing program\n", 18executing program
) = 18
[pid 15056] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15056] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15056] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15056] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15057]}, 88) = 15057
[pid 15056] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15057 attached
 <unfinished ...>
[pid 15057] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15057] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15057] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15056] <... futex resumed>)        = 0
[pid 15057] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15057] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15057] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15056] <... futex resumed>)        = 0
[pid 15056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15057] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15056] <... futex resumed>)        = 0
[pid 15056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15057] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15056] <... futex resumed>)        = 0
[pid 15056] exit_group(0)               = ?
[pid 15057] +++ exited with 0 +++
[pid 15056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15058 attached
 <unfinished ...>
[pid 15058] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15058
[pid 15058] setpgid(0, 0)               = 0
[pid 15058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15058] write(3, "1000", 4)         = 4
[pid 15058] close(3)                    = 0
[pid 15058] write(1, "executing program\n", 18executing program
) = 18
[pid 15058] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15058] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15058] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15058] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15059 attached
 <unfinished ...>
[pid 15059] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15059] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15058] <... clone3 resumed> => {parent_tid=[15059]}, 88) = 15059
[pid 15058] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15059] <... futex resumed>)        = 0
[pid 15059] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15059] <... futex resumed>)        = 0
[pid 15059] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15059] <... futex resumed>)        = 0
[pid 15059] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15059] <... futex resumed>)        = 0
[pid 15059] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15059] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15058] exit_group(0)               = ?
[pid 15059] <... futex resumed>)        = ?
[pid 15059] +++ exited with 0 +++
[pid 15058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15060
./strace-static-x86_64: Process 15060 attached
[pid 15060] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15060] setpgid(0, 0)               = 0
[pid 15060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15060] write(3, "1000", 4)         = 4
[pid 15060] close(3)                    = 0
[pid 15060] write(1, "executing program\n", 18executing program
) = 18
[pid 15060] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15060] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15060] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15060] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15060] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15060] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15061 attached
 => {parent_tid=[15061]}, 88) = 15061
[pid 15061] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15061] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15060] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15061] <... futex resumed>)        = 0
[pid 15061] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15061] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15060] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15061] <... futex resumed>)        = 0
[pid 15061] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15060] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15061] <... futex resumed>)        = 0
[pid 15061] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15060] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15061] <... futex resumed>)        = 0
[pid 15061] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15060] exit_group(0)               = ?
[pid 15061] <... futex resumed>)        = ?
[pid 15061] +++ exited with 0 +++
[pid 15060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15062 attached
, child_tidptr=0x55557060c690) = 15062
[pid 15062] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15062] setpgid(0, 0)               = 0
[pid 15062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15062] write(3, "1000", 4)         = 4
[pid 15062] close(3)                    = 0
[pid 15062] write(1, "executing program\n", 18executing program
) = 18
[pid 15062] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15062] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15062] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15062] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15062] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15062] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15063]}, 88) = 15063
[pid 15062] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15063 attached
 <unfinished ...>
[pid 15063] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15063] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15062] <... futex resumed>)        = 0
[pid 15062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15063] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15062] <... futex resumed>)        = 0
[pid 15062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15063] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15062] <... futex resumed>)        = 0
[pid 15062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15063] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15062] <... futex resumed>)        = 0
[pid 15062] exit_group(0)               = ?
[pid 15063] +++ exited with 0 +++
[pid 15062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15064
./strace-static-x86_64: Process 15064 attached
[pid 15064] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15064] setpgid(0, 0)               = 0
[pid 15064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15064] write(3, "1000", 4)         = 4
[pid 15064] close(3)                    = 0
[pid 15064] write(1, "executing program\n", 18executing program
) = 18
[pid 15064] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15064] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15064] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15064] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15064] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15064] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15065 attached
 => {parent_tid=[15065]}, 88) = 15065
[pid 15065] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15065] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15065] <... futex resumed>)        = 0
[pid 15065] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15065] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15065] <... futex resumed>)        = 0
[pid 15065] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15065] <... futex resumed>)        = 0
[pid 15065] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15065] <... futex resumed>)        = 0
[pid 15064] <... futex resumed>)        = 1
[pid 15065] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15065] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15064] exit_group(0)               = ?
[pid 15065] <... futex resumed>)        = ?
[pid 15065] +++ exited with 0 +++
[pid 15064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15066
./strace-static-x86_64: Process 15066 attached
[pid 15066] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15066] setpgid(0, 0)               = 0
[pid 15066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15066] write(3, "1000", 4)         = 4
[pid 15066] close(3)                    = 0
executing program
[pid 15066] write(1, "executing program\n", 18) = 18
[pid 15066] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15066] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15066] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15066] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15066] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15067 attached
 => {parent_tid=[15067]}, 88) = 15067
[pid 15067] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15067] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15067] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15067] <... futex resumed>)        = 0
[pid 15067] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15067] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15067] <... futex resumed>)        = 0
[pid 15066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15067] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15067] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15067] <... futex resumed>)        = 0
[pid 15066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15067] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15066] <... futex resumed>)        = 0
[pid 15066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15067] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15066] <... futex resumed>)        = 0
[pid 15067] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15066] exit_group(0)               = ?
[pid 15067] <... futex resumed>)        = ?
[pid 15067] +++ exited with 0 +++
[pid 15066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15068
./strace-static-x86_64: Process 15068 attached
[pid 15068] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15068] setpgid(0, 0)               = 0
[pid 15068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15068] write(3, "1000", 4)         = 4
[pid 15068] close(3)                    = 0
[pid 15068] write(1, "executing program\n", 18executing program
) = 18
[pid 15068] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15068] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15068] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15068] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15068] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15068] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15069 attached
 => {parent_tid=[15069]}, 88) = 15069
[pid 15069] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15069] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15068] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15069] <... futex resumed>)        = 0
[pid 15068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15069] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15069] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15068] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15069] <... futex resumed>)        = 0
[pid 15069] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15069] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15069] <... futex resumed>)        = 0
[pid 15068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15069] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15069] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15068] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15069] <... futex resumed>)        = 0
[pid 15068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15069] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15068] <... futex resumed>)        = 0
[pid 15069] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15068] exit_group(0)               = ?
[pid 15069] <... futex resumed>)        = ?
[pid 15069] +++ exited with 0 +++
[pid 15068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15070
./strace-static-x86_64: Process 15070 attached
[pid 15070] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15070] setpgid(0, 0)               = 0
[pid 15070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15070] write(3, "1000", 4)         = 4
[pid 15070] close(3)                    = 0
[pid 15070] write(1, "executing program\n", 18executing program
) = 18
[pid 15070] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15070] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15070] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15071 attached
 => {parent_tid=[15071]}, 88) = 15071
[pid 15071] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15071] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15070] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15071] <... futex resumed>)        = 0
[pid 15070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15071] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15070] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15071] <... futex resumed>)        = 0
[pid 15071] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15071] <... futex resumed>)        = 0
[pid 15070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15071] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15070] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15071] <... futex resumed>)        = 0
[pid 15071] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15070] exit_group(0)               = ?
[pid 15071] <... futex resumed>)        = ?
[pid 15071] +++ exited with 0 +++
[pid 15070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15072
./strace-static-x86_64: Process 15072 attached
[pid 15072] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15072] setpgid(0, 0)               = 0
[pid 15072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15072] write(3, "1000", 4)         = 4
[pid 15072] close(3)                    = 0
executing program
[pid 15072] write(1, "executing program\n", 18) = 18
[pid 15072] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15072] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15072] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15072] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15073 attached
 => {parent_tid=[15073]}, 88) = 15073
[pid 15073] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15073] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15072] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15073] <... futex resumed>)        = 0
[pid 15072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15073] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15073] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15072] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15073] <... futex resumed>)        = 0
[pid 15073] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15073] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15073] <... futex resumed>)        = 0
[pid 15073] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15073] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15073] <... futex resumed>)        = 0
[pid 15072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15073] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15072] <... futex resumed>)        = 0
[pid 15073] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15072] exit_group(0)               = ?
[pid 15073] <... futex resumed>)        = ?
[pid 15073] +++ exited with 0 +++
[pid 15072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15074
./strace-static-x86_64: Process 15074 attached
[pid 15074] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15074] setpgid(0, 0)               = 0
[pid 15074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15074] write(3, "1000", 4)         = 4
[pid 15074] close(3)                    = 0
executing program
[pid 15074] write(1, "executing program\n", 18) = 18
[pid 15074] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15074] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15074] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15074] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15074] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15075 attached
 => {parent_tid=[15075]}, 88) = 15075
[pid 15075] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15075] <... futex resumed>)        = 0
[pid 15074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15075] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15075] <... futex resumed>)        = 0
[pid 15075] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15075] <... futex resumed>)        = 0
[pid 15074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15075] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15075] <... futex resumed>)        = 0
[pid 15075] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15075] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15074] exit_group(0)               = ?
[pid 15075] <... futex resumed>)        = ?
[pid 15075] +++ exited with 0 +++
[pid 15074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15076
./strace-static-x86_64: Process 15076 attached
[pid 15076] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15076] setpgid(0, 0)               = 0
[pid 15076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15076] write(3, "1000", 4)         = 4
[pid 15076] close(3)                    = 0
executing program
[pid 15076] write(1, "executing program\n", 18) = 18
[pid 15076] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15076] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15076] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15076] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15077 attached
 <unfinished ...>
[pid 15077] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15077] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15076] <... clone3 resumed> => {parent_tid=[15077]}, 88) = 15077
[pid 15076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15077] <... futex resumed>)        = 0
[pid 15077] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15077] <... futex resumed>)        = 0
[pid 15076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15077] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15077] <... futex resumed>)        = 0
[pid 15076] <... futex resumed>)        = 1
[pid 15077] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15077] <... futex resumed>)        = 0
[pid 15076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15077] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15076] exit_group(0)               = ?
[pid 15077] <... futex resumed>)        = ?
[pid 15077] +++ exited with 0 +++
[pid 15076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15078
./strace-static-x86_64: Process 15078 attached
[pid 15078] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15078] setpgid(0, 0)               = 0
[pid 15078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15078] write(3, "1000", 4)         = 4
[pid 15078] close(3)                    = 0
executing program
[pid 15078] write(1, "executing program\n", 18) = 18
[pid 15078] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15078] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15078] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15078] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15079 attached
 <unfinished ...>
[pid 15079] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15078] <... clone3 resumed> => {parent_tid=[15079]}, 88) = 15079
[pid 15078] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15079] <... futex resumed>)        = 0
[pid 15078] <... futex resumed>)        = 1
[pid 15079] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15079] <... futex resumed>)        = 0
[pid 15078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15079] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15079] <... futex resumed>)        = 0
[pid 15079] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15079] <... futex resumed>)        = 0
[pid 15079] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15078] exit_group(0)               = ?
[pid 15079] <... futex resumed>)        = ?
[pid 15079] +++ exited with 0 +++
[pid 15078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15080
./strace-static-x86_64: Process 15080 attached
[pid 15080] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15080] setpgid(0, 0)               = 0
[pid 15080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15080] write(3, "1000", 4)         = 4
[pid 15080] close(3)                    = 0
executing program
[pid 15080] write(1, "executing program\n", 18) = 18
[pid 15080] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15080] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15080] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15080] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15080] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15080] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15081 attached
 => {parent_tid=[15081]}, 88) = 15081
[pid 15081] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15081] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15080] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15081] <... futex resumed>)        = 0
[pid 15080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15081] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15080] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15081] <... futex resumed>)        = 0
[pid 15081] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15080] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15081] <... futex resumed>)        = 0
[pid 15081] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15081] <... futex resumed>)        = 0
[pid 15080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15081] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15080] <... futex resumed>)        = 0
[pid 15081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15080] exit_group(0)               = ?
[pid 15081] <... futex resumed>)        = ?
[pid 15081] +++ exited with 0 +++
[pid 15080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15082
./strace-static-x86_64: Process 15082 attached
[pid 15082] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15082] setpgid(0, 0)               = 0
[pid 15082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15082] write(3, "1000", 4)         = 4
[pid 15082] close(3)                    = 0
[pid 15082] write(1, "executing program\n", 18executing program
) = 18
[pid 15082] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15082] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15082] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15082] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15083 attached
 <unfinished ...>
[pid 15083] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15083] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15082] <... clone3 resumed> => {parent_tid=[15083]}, 88) = 15083
[pid 15082] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15083] <... futex resumed>)        = 0
[pid 15082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15083] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15083] <... futex resumed>)        = 0
[pid 15082] <... futex resumed>)        = 1
[pid 15083] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15083] <... futex resumed>)        = 0
[pid 15082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15083] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15083] <... futex resumed>)        = 0
[pid 15082] <... futex resumed>)        = 1
[pid 15082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15083] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15082] <... futex resumed>)        = 0
[pid 15082] exit_group(0)               = ?
[pid 15083] <... futex resumed>)        = ?
[pid 15083] +++ exited with 0 +++
[pid 15082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15084
./strace-static-x86_64: Process 15084 attached
[pid 15084] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15084] setpgid(0, 0)               = 0
[pid 15084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15084] write(3, "1000", 4)         = 4
[pid 15084] close(3)                    = 0
[pid 15084] write(1, "executing program\n", 18executing program
) = 18
[pid 15084] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15084] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15084] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15084] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15085 attached
 => {parent_tid=[15085]}, 88) = 15085
[pid 15085] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15085] <... futex resumed>)        = 0
[pid 15084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15085] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15085] <... futex resumed>)        = 0
[pid 15085] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15085] <... futex resumed>)        = 0
[pid 15084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15085] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15085] <... futex resumed>)        = 0
[pid 15085] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15084] exit_group(0)               = ?
[pid 15085] <... futex resumed>)        = ?
[pid 15085] +++ exited with 0 +++
[pid 15084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15086 attached
, child_tidptr=0x55557060c690) = 15086
[pid 15086] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15086] setpgid(0, 0)               = 0
[pid 15086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 15086] write(3, "1000", 4)         = 4
[pid 15086] close(3)                    = 0
[pid 15086] write(1, "executing program\n", 18) = 18
[pid 15086] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15086] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15086] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15086] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15086] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15086] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15087 attached
 <unfinished ...>
[pid 15087] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15087] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15087] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15086] <... clone3 resumed> => {parent_tid=[15087]}, 88) = 15087
[pid 15086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15087] <... futex resumed>)        = 0
[pid 15086] <... futex resumed>)        = 1
[pid 15087] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15087] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15087] <... futex resumed>)        = 0
[pid 15086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15087] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15087] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15087] <... futex resumed>)        = 0
[pid 15087] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15087] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15087] <... futex resumed>)        = 0
[pid 15087] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15087] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15086] exit_group(0)               = ?
[pid 15087] <... futex resumed>)        = ?
[pid 15087] +++ exited with 0 +++
[pid 15086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15088 attached
, child_tidptr=0x55557060c690) = 15088
[pid 15088] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15088] setpgid(0, 0)               = 0
[pid 15088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15088] write(3, "1000", 4)         = 4
[pid 15088] close(3)                    = 0
[pid 15088] write(1, "executing program\n", 18executing program
) = 18
[pid 15088] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15088] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15088] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15088] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15088] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15088] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15089 attached
 => {parent_tid=[15089]}, 88) = 15089
[pid 15089] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15089] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15088] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15089] <... futex resumed>)        = 0
[pid 15089] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15089] <... futex resumed>)        = 0
[pid 15089] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15089] <... futex resumed>)        = 0
[pid 15089] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15089] <... futex resumed>)        = 0
[pid 15089] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15088] exit_group(0)               = ?
[pid 15089] <... futex resumed>)        = ?
[pid 15089] +++ exited with 0 +++
[pid 15088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15090 attached
, child_tidptr=0x55557060c690) = 15090
[pid 15090] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15090] setpgid(0, 0)               = 0
[pid 15090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15090] write(3, "1000", 4)         = 4
[pid 15090] close(3)                    = 0
executing program
[pid 15090] write(1, "executing program\n", 18) = 18
[pid 15090] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15090] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15090] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15090] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15091 attached
 => {parent_tid=[15091]}, 88) = 15091
[pid 15091] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15091] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15090] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15091] <... futex resumed>)        = 0
[pid 15091] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15091] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15090] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15091] <... futex resumed>)        = 0
[pid 15091] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15091] <... futex resumed>)        = 0
[pid 15091] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15091] <... futex resumed>)        = 0
[pid 15091] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15090] exit_group(0)               = ?
[pid 15091] <... futex resumed>)        = ?
[pid 15091] +++ exited with 0 +++
[pid 15090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15092
./strace-static-x86_64: Process 15092 attached
[pid 15092] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15092] setpgid(0, 0)               = 0
[pid 15092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15092] write(3, "1000", 4)         = 4
[pid 15092] close(3)                    = 0
executing program
[pid 15092] write(1, "executing program\n", 18) = 18
[pid 15092] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15092] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15092] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15092] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15093 attached
 <unfinished ...>
[pid 15093] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15093] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15092] <... clone3 resumed> => {parent_tid=[15093]}, 88) = 15093
[pid 15092] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15093] <... futex resumed>)        = 0
[pid 15093] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15093] <... futex resumed>)        = 0
[pid 15092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15093] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15092] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15093] <... futex resumed>)        = 0
[pid 15092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15093] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15092] <... futex resumed>)        = 0
[pid 15092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15093] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15092] <... futex resumed>)        = 0
[pid 15092] exit_group(0)               = ?
[pid 15093] +++ exited with 0 +++
[pid 15092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15094 attached
, child_tidptr=0x55557060c690) = 15094
[pid 15094] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15094] setpgid(0, 0)               = 0
[pid 15094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15094] write(3, "1000", 4)         = 4
[pid 15094] close(3)                    = 0
[pid 15094] write(1, "executing program\n", 18executing program
) = 18
[pid 15094] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15094] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15094] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15094] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15094] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15094] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15095]}, 88) = 15095
./strace-static-x86_64: Process 15095 attached
[pid 15095] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15094] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15095] <... set_robust_list resumed>) = 0
[pid 15095] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15095] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15094] <... futex resumed>)        = 0
[pid 15094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15095] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15094] <... futex resumed>)        = 0
[pid 15094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15095] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15094] <... futex resumed>)        = 0
[pid 15094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15095] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15094] <... futex resumed>)        = 0
[pid 15094] exit_group(0)               = ?
[pid 15095] +++ exited with 0 +++
[pid 15094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15096 attached
 <unfinished ...>
[pid 15096] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15096
[pid 15096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15096] setpgid(0, 0)               = 0
[pid 15096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15096] write(3, "1000", 4)         = 4
[pid 15096] close(3)                    = 0
[pid 15096] write(1, "executing program\n", 18executing program
) = 18
[pid 15096] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15096] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15096] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15096] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15097]}, 88) = 15097
[pid 15096] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15097 attached
 <unfinished ...>
[pid 15097] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15097] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15097] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15096] <... futex resumed>)        = 0
[pid 15096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15097] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15096] <... futex resumed>)        = 0
[pid 15096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15097] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15096] <... futex resumed>)        = 0
[pid 15096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15097] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15096] <... futex resumed>)        = 0
[pid 15096] exit_group(0)               = ?
[pid 15097] +++ exited with 0 +++
[pid 15096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15098 attached
 <unfinished ...>
[pid 15098] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15098
[pid 15098] setpgid(0, 0)               = 0
[pid 15098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15098] write(3, "1000", 4)         = 4
[pid 15098] close(3)                    = 0
[pid 15098] write(1, "executing program\n", 18executing program
) = 18
[pid 15098] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15098] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15098] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15098] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15098] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15099 attached
 => {parent_tid=[15099]}, 88) = 15099
[pid 15099] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15099] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15099] <... futex resumed>)        = 0
[pid 15099] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15099] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15098] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15099] <... futex resumed>)        = 0
[pid 15099] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15099] <... futex resumed>)        = 0
[pid 15099] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15099] <... futex resumed>)        = 0
[pid 15099] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15099] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15098] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15098] exit_group(0)               = ?
[pid 15099] <... futex resumed>)        = ?
[pid 15099] +++ exited with 0 +++
[pid 15098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15100
./strace-static-x86_64: Process 15100 attached
[pid 15100] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15100] setpgid(0, 0)               = 0
[pid 15100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15100] write(3, "1000", 4)         = 4
[pid 15100] close(3executing program
)                    = 0
[pid 15100] write(1, "executing program\n", 18) = 18
[pid 15100] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15100] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15100] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15100] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15100] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15100] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15101 attached
 <unfinished ...>
[pid 15101] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15101] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15100] <... clone3 resumed> => {parent_tid=[15101]}, 88) = 15101
[pid 15100] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15101] <... futex resumed>)        = 0
[pid 15100] <... futex resumed>)        = 1
[pid 15101] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15101] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15101] <... futex resumed>)        = 0
[pid 15100] <... futex resumed>)        = 1
[pid 15101] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15101] <... futex resumed>)        = 0
[pid 15100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15101] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15101] <... futex resumed>)        = 0
[pid 15100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15101] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15100] <... futex resumed>)        = 0
[pid 15101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15100] exit_group(0 <unfinished ...>
[pid 15101] <... futex resumed>)        = ?
[pid 15101] +++ exited with 0 +++
[pid 15100] <... exit_group resumed>)   = ?
[pid 15100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15102
./strace-static-x86_64: Process 15102 attached
[pid 15102] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15102] setpgid(0, 0)               = 0
[pid 15102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15102] write(3, "1000", 4)         = 4
[pid 15102] close(3)                    = 0
[pid 15102] write(1, "executing program\n", 18executing program
) = 18
[pid 15102] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15102] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15102] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15102] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15103]}, 88) = 15103
[pid 15102] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15103 attached
 <unfinished ...>
[pid 15103] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15103] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15103] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15102] <... futex resumed>)        = 0
[pid 15102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15103] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15102] <... futex resumed>)        = 0
[pid 15103] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15103] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15103] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15102] <... futex resumed>)        = 0
[pid 15102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15103] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15102] <... futex resumed>)        = 0
[pid 15102] exit_group(0)               = ?
[pid 15103] +++ exited with 0 +++
[pid 15102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15104
./strace-static-x86_64: Process 15104 attached
[pid 15104] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15104] setpgid(0, 0)               = 0
[pid 15104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15104] write(3, "1000", 4)         = 4
[pid 15104] close(3)                    = 0
[pid 15104] write(1, "executing program\n", 18executing program
) = 18
[pid 15104] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15104] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15104] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15104] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15105 attached
 => {parent_tid=[15105]}, 88) = 15105
[pid 15105] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15105] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15105] <... futex resumed>)        = 0
[pid 15105] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15105] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15105] <... futex resumed>)        = 0
[pid 15105] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15105] <... futex resumed>)        = 0
[pid 15105] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15105] <... futex resumed>)        = 0
[pid 15104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15105] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15104] exit_group(0)               = ?
[pid 15105] <... futex resumed>)        = ?
[pid 15105] +++ exited with 0 +++
[pid 15104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15106
./strace-static-x86_64: Process 15106 attached
[pid 15106] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15106] setpgid(0, 0)               = 0
[pid 15106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15106] write(3, "1000", 4)         = 4
[pid 15106] close(3executing program
)                    = 0
[pid 15106] write(1, "executing program\n", 18) = 18
[pid 15106] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15106] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15106] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15106] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15106] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15106] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15107 attached
 <unfinished ...>
[pid 15107] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15106] <... clone3 resumed> => {parent_tid=[15107]}, 88) = 15107
[pid 15106] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15107] <... futex resumed>)        = 0
[pid 15107] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15107] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15106] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15107] <... futex resumed>)        = 0
[pid 15106] <... futex resumed>)        = 1
[pid 15107] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15107] <... futex resumed>)        = 0
[pid 15106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15107] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15106] <... futex resumed>)        = 0
[pid 15106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15107] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15107] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15106] <... futex resumed>)        = 0
[pid 15107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15106] exit_group(0)               = ?
[pid 15107] <... futex resumed>)        = ?
[pid 15107] +++ exited with 0 +++
[pid 15106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15108
./strace-static-x86_64: Process 15108 attached
[pid 15108] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15108] setpgid(0, 0)               = 0
[pid 15108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15108] write(3, "1000", 4)         = 4
[pid 15108] close(3executing program
)                    = 0
[pid 15108] write(1, "executing program\n", 18) = 18
[pid 15108] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15108] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15108] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15108] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15108] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15108] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15109 attached
 <unfinished ...>
[pid 15109] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15109] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15109] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15108] <... clone3 resumed> => {parent_tid=[15109]}, 88) = 15109
[pid 15108] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15109] <... futex resumed>)        = 0
[pid 15108] <... futex resumed>)        = 1
[pid 15109] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15109] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15109] <... futex resumed>)        = 0
[pid 15108] <... futex resumed>)        = 1
[pid 15109] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15109] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15109] <... futex resumed>)        = 0
[pid 15108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15109] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15109] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15108] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15109] <... futex resumed>)        = 0
[pid 15108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15109] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15108] <... futex resumed>)        = 0
[pid 15109] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15108] exit_group(0)               = ?
[pid 15109] <... futex resumed>)        = ?
[pid 15109] +++ exited with 0 +++
[pid 15108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15110
./strace-static-x86_64: Process 15110 attached
[pid 15110] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15110] setpgid(0, 0)               = 0
[pid 15110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15110] write(3, "1000", 4)         = 4
[pid 15110] close(3executing program
)                    = 0
[pid 15110] write(1, "executing program\n", 18) = 18
[pid 15110] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15110] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15110] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15111 attached
 <unfinished ...>
[pid 15111] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15110] <... clone3 resumed> => {parent_tid=[15111]}, 88) = 15111
[pid 15110] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15111] <... futex resumed>)        = 0
[pid 15110] <... futex resumed>)        = 1
[pid 15111] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15111] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15111] <... futex resumed>)        = 0
[pid 15111] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15111] <... futex resumed>)        = 0
[pid 15111] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15111] <... futex resumed>)        = 0
[pid 15110] <... futex resumed>)        = 1
[pid 15110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15111] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15110] <... futex resumed>)        = 0
[pid 15111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15110] exit_group(0)               = ?
[pid 15111] <... futex resumed>)        = ?
[pid 15111] +++ exited with 0 +++
[pid 15110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15112
./strace-static-x86_64: Process 15112 attached
[pid 15112] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15112] setpgid(0, 0)               = 0
[pid 15112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15112] write(3, "1000", 4)         = 4
[pid 15112] close(3)                    = 0
executing program
[pid 15112] write(1, "executing program\n", 18) = 18
[pid 15112] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15112] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15112] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15112] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15112] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15112] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15113 attached
 => {parent_tid=[15113]}, 88) = 15113
[pid 15113] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15113] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15113] <... futex resumed>)        = 0
[pid 15112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15113] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15113] <... futex resumed>)        = 0
[pid 15113] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15113] <... futex resumed>)        = 0
[pid 15112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15113] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15113] <... futex resumed>)        = 0
[pid 15112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15113] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15112] exit_group(0)               = ?
[pid 15113] <... futex resumed>)        = ?
[pid 15113] +++ exited with 0 +++
[pid 15112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15114 attached
, child_tidptr=0x55557060c690) = 15114
[pid 15114] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15114] setpgid(0, 0)               = 0
[pid 15114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15114] write(3, "1000", 4)         = 4
[pid 15114] close(3)                    = 0
[pid 15114] write(1, "executing program\n", 18executing program
) = 18
[pid 15114] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15114] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15114] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15114] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15114] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15114] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15115 attached
 => {parent_tid=[15115]}, 88) = 15115
[pid 15115] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15115] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15115] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15114] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15115] <... futex resumed>)        = 0
[pid 15114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15115] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15115] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15114] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15115] <... futex resumed>)        = 0
[pid 15115] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15115] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15115] <... futex resumed>)        = 0
[pid 15114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15115] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15115] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15114] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15115] <... futex resumed>)        = 0
[pid 15115] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15115] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15114] exit_group(0)               = ?
[pid 15115] <... futex resumed>)        = ?
[pid 15115] +++ exited with 0 +++
[pid 15114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15116 attached
, child_tidptr=0x55557060c690) = 15116
[pid 15116] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15116] setpgid(0, 0)               = 0
[pid 15116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15116] write(3, "1000", 4)         = 4
[pid 15116] close(3)                    = 0
[pid 15116] write(1, "executing program\n", 18executing program
) = 18
[pid 15116] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15116] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15116] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15117 attached
 => {parent_tid=[15117]}, 88) = 15117
[pid 15117] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15117] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15117] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15117] <... futex resumed>)        = 0
[pid 15116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15117] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15117] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15117] <... futex resumed>)        = 0
[pid 15117] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15117] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15117] <... futex resumed>)        = 0
[pid 15116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15117] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15117] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15117] <... futex resumed>)        = 0
[pid 15116] <... futex resumed>)        = 1
[pid 15117] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15117] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15117] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15116] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15116] exit_group(0)               = ?
[pid 15117] <... futex resumed>)        = ?
[pid 15117] +++ exited with 0 +++
[pid 15116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15118 attached
, child_tidptr=0x55557060c690) = 15118
[pid 15118] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15118] setpgid(0, 0)               = 0
[pid 15118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15118] write(3, "1000", 4)         = 4
[pid 15118] close(3)                    = 0
[pid 15118] write(1, "executing program\n", 18executing program
) = 18
[pid 15118] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15118] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15118] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15118] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15119]}, 88) = 15119
[pid 15118] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15119 attached
 <unfinished ...>
[pid 15119] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15119] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15119] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15118] <... futex resumed>)        = 0
[pid 15118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15119] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15118] <... futex resumed>)        = 0
[pid 15118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15119] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15118] <... futex resumed>)        = 0
[pid 15118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15119] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15118] <... futex resumed>)        = 0
[pid 15118] exit_group(0)               = ?
[pid 15119] +++ exited with 0 +++
[pid 15118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15120 attached
 <unfinished ...>
[pid 15120] set_robust_list(0x55557060c6a0, 24 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15120
[pid 15120] <... set_robust_list resumed>) = 0
[pid 15120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15120] setpgid(0, 0)               = 0
[pid 15120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15120] write(3, "1000", 4)         = 4
[pid 15120] close(3)                    = 0
[pid 15120] write(1, "executing program\n", 18executing program
) = 18
[pid 15120] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15120] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15120] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15120] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15120] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15120] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15121]}, 88) = 15121
[pid 15120] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15121 attached
 <unfinished ...>
[pid 15121] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15121] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15121] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15120] <... futex resumed>)        = 0
[pid 15120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15121] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15120] <... futex resumed>)        = 0
[pid 15120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15121] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15120] <... futex resumed>)        = 0
[pid 15120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15121] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15120] <... futex resumed>)        = 0
[pid 15120] exit_group(0 <unfinished ...>
[pid 15121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15120] <... exit_group resumed>)   = ?
[pid 15121] <... futex resumed>)        = ?
[pid 15121] +++ exited with 0 +++
[pid 15120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15122
./strace-static-x86_64: Process 15122 attached
[pid 15122] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15122] setpgid(0, 0)               = 0
[pid 15122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15122] write(3, "1000", 4)         = 4
[pid 15122] close(3)                    = 0
[pid 15122] write(1, "executing program\n", 18executing program
) = 18
[pid 15122] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15122] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15122] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15122] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15123 attached
 => {parent_tid=[15123]}, 88) = 15123
[pid 15123] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15123] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15122] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15123] <... futex resumed>)        = 0
[pid 15123] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15123] <... futex resumed>)        = 0
[pid 15123] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15123] <... futex resumed>)        = 0
[pid 15123] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15123] <... futex resumed>)        = 0
[pid 15123] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15122] exit_group(0)               = ?
[pid 15123] <... futex resumed>)        = ?
[pid 15123] +++ exited with 0 +++
[pid 15122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15124 attached
, child_tidptr=0x55557060c690) = 15124
[pid 15124] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15124] setpgid(0, 0)               = 0
[pid 15124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15124] write(3, "1000", 4)         = 4
[pid 15124] close(3)                    = 0
[pid 15124] write(1, "executing program\n", 18executing program
) = 18
[pid 15124] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15124] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15124] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15124] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15124] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15124] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15125]}, 88) = 15125
[pid 15124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15125 attached
 <unfinished ...>
[pid 15125] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15125] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15124] <... futex resumed>)        = 0
[pid 15124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15125] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15124] <... futex resumed>)        = 0
[pid 15124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15125] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15124] <... futex resumed>)        = 0
[pid 15124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15125] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15124] <... futex resumed>)        = 0
[pid 15124] exit_group(0)               = ?
[pid 15125] +++ exited with 0 +++
[pid 15124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15126
./strace-static-x86_64: Process 15126 attached
[pid 15126] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15126] setpgid(0, 0)               = 0
[pid 15126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15126] write(3, "1000", 4)         = 4
[pid 15126] close(3)                    = 0
[pid 15126] write(1, "executing program\n", 18executing program
) = 18
[pid 15126] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15126] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15126] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15126] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15126] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15126] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15127 attached
 => {parent_tid=[15127]}, 88) = 15127
[pid 15127] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15127] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15127] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15127] <... futex resumed>)        = 0
[pid 15127] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15127] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15127] <... futex resumed>)        = 0
[pid 15127] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15127] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15127] <... futex resumed>)        = 0
[pid 15126] <... futex resumed>)        = 1
[pid 15127] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15127] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15127] <... futex resumed>)        = 0
[pid 15126] <... futex resumed>)        = 1
[pid 15127] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15127] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15126] exit_group(0)               = ?
[pid 15127] <... futex resumed>)        = ?
[pid 15127] +++ exited with 0 +++
[pid 15126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15128
./strace-static-x86_64: Process 15128 attached
[pid 15128] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15128] setpgid(0, 0)               = 0
[pid 15128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15128] write(3, "1000", 4)         = 4
[pid 15128] close(3)                    = 0
[pid 15128] write(1, "executing program\n", 18executing program
) = 18
[pid 15128] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15128] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15128] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15128] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15129]}, 88) = 15129
[pid 15128] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15129 attached
 <unfinished ...>
[pid 15129] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15129] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15129] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15128] <... futex resumed>)        = 0
[pid 15128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15129] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15129] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15128] <... futex resumed>)        = 0
[pid 15128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15129] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15129] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15128] <... futex resumed>)        = 0
[pid 15128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15129] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15128] <... futex resumed>)        = 0
[pid 15128] exit_group(0 <unfinished ...>
[pid 15129] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL) = ?
[pid 15128] <... exit_group resumed>)   = ?
[pid 15129] +++ exited with 0 +++
[pid 15128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15130 attached
, child_tidptr=0x55557060c690) = 15130
[pid 15130] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15130] setpgid(0, 0)               = 0
[pid 15130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15130] write(3, "1000", 4)         = 4
[pid 15130] close(3)                    = 0
[pid 15130] write(1, "executing program\n", 18executing program
) = 18
[pid 15130] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15130] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15130] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15130] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15131]}, 88) = 15131
[pid 15130] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15131 attached
 <unfinished ...>
[pid 15131] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15131] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15131] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15130] <... futex resumed>)        = 0
[pid 15130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15131] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15130] <... futex resumed>)        = 0
[pid 15130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15131] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15130] <... futex resumed>)        = 0
[pid 15130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15131] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15130] <... futex resumed>)        = 0
[pid 15130] exit_group(0)               = ?
[pid 15131] +++ exited with 0 +++
[pid 15130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15132 attached
, child_tidptr=0x55557060c690) = 15132
[pid 15132] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15132] setpgid(0, 0)               = 0
[pid 15132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15132] write(3, "1000", 4)         = 4
[pid 15132] close(3)                    = 0
[pid 15132] write(1, "executing program\n", 18executing program
) = 18
[pid 15132] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15132] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15132] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15132] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15132] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15132] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15133]}, 88) = 15133
[pid 15132] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15133 attached
 <unfinished ...>
[pid 15133] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15133] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15132] <... futex resumed>)        = 0
[pid 15132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15133] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15132] <... futex resumed>)        = 0
[pid 15132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15133] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15132] <... futex resumed>)        = 0
[pid 15132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15133] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15132] <... futex resumed>)        = 0
[pid 15132] exit_group(0)               = ?
[pid 15133] +++ exited with 0 +++
[pid 15132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15134 attached
 <unfinished ...>
[pid 15134] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15134] setpgid(0, 0)               = 0
[pid 15134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15134
[pid 15134] <... openat resumed>)       = 3
[pid 15134] write(3, "1000", 4)         = 4
[pid 15134] close(3executing program
)                    = 0
[pid 15134] write(1, "executing program\n", 18) = 18
[pid 15134] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15134] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15134] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15134] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15135 attached
 => {parent_tid=[15135]}, 88) = 15135
[pid 15134] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15135] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15135] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15135] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15134] <... futex resumed>)        = 0
[pid 15134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15135] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15134] <... futex resumed>)        = 0
[pid 15134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15135] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15134] <... futex resumed>)        = 0
[pid 15134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15135] <... futex resumed>)        = 1
[pid 15135] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15134] <... futex resumed>)        = 0
[pid 15134] exit_group(0)               = ?
[pid 15135] +++ exited with 0 +++
[pid 15134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15136 attached
, child_tidptr=0x55557060c690) = 15136
[pid 15136] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15136] setpgid(0, 0)               = 0
[pid 15136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15136] write(3, "1000", 4)         = 4
[pid 15136] close(3)                    = 0
[pid 15136] write(1, "executing program\n", 18executing program
) = 18
[pid 15136] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15136] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15136] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15136] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15136] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15136] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15137 attached
 => {parent_tid=[15137]}, 88) = 15137
[pid 15137] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15137] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15136] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15137] <... futex resumed>)        = 0
[pid 15137] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15137] <... futex resumed>)        = 0
[pid 15137] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15137] <... futex resumed>)        = 0
[pid 15137] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15137] <... futex resumed>)        = 0
[pid 15137] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15137] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15136] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15136] exit_group(0)               = ?
[pid 15137] <... futex resumed>)        = ?
[pid 15137] +++ exited with 0 +++
[pid 15136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15138 attached
, child_tidptr=0x55557060c690) = 15138
[pid 15138] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15138] setpgid(0, 0)               = 0
[pid 15138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15138] write(3, "1000", 4)         = 4
[pid 15138] close(3)                    = 0
executing program
[pid 15138] write(1, "executing program\n", 18) = 18
[pid 15138] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15138] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15138] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15138] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15138] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15138] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15139 attached
 => {parent_tid=[15139]}, 88) = 15139
[pid 15139] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15138] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15139] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15138] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15139] <... futex resumed>)        = 0
[pid 15138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15139] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15138] <... futex resumed>)        = 0
[pid 15138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15139] <... futex resumed>)        = 0
[pid 15139] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15139] <... futex resumed>)        = 0
[pid 15138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15139] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15138] <... futex resumed>)        = 0
[pid 15138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15139] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15138] <... futex resumed>)        = 0
[pid 15139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15138] exit_group(0)               = ?
[pid 15139] <... futex resumed>)        = ?
[pid 15139] +++ exited with 0 +++
[pid 15138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15140 attached
, child_tidptr=0x55557060c690) = 15140
[pid 15140] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15140] setpgid(0, 0)               = 0
[pid 15140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15140] write(3, "1000", 4)         = 4
[pid 15140] close(3)                    = 0
[pid 15140] write(1, "executing program\n", 18executing program
) = 18
[pid 15140] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15140] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15140] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15141]}, 88) = 15141
[pid 15140] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15141 attached
 <unfinished ...>
[pid 15141] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15141] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15141] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15140] <... futex resumed>)        = 0
[pid 15140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15141] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15140] <... futex resumed>)        = 0
[pid 15140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15141] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15140] <... futex resumed>)        = 0
[pid 15140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15141] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15140] <... futex resumed>)        = 0
[pid 15140] exit_group(0)               = ?
[pid 15141] +++ exited with 0 +++
[pid 15140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15142 attached
 <unfinished ...>
[pid 15142] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15142] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15142
[pid 15142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15142] write(3, "1000", 4)         = 4
[pid 15142] close(3)                    = 0
[pid 15142] write(1, "executing program\n", 18executing program
) = 18
[pid 15142] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15142] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15142] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15142] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15142] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15142] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15143]}, 88) = 15143
[pid 15142] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15143 attached
 <unfinished ...>
[pid 15143] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15143] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15142] <... futex resumed>)        = 0
[pid 15142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15143] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15142] <... futex resumed>)        = 0
[pid 15142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15143] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15142] <... futex resumed>)        = 0
[pid 15142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15143] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15142] <... futex resumed>)        = 0
[pid 15142] exit_group(0 <unfinished ...>
[pid 15143] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15142] <... exit_group resumed>)   = ?
[pid 15143] <... futex resumed>)        = ?
[pid 15143] +++ exited with 0 +++
[pid 15142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15144 attached
 <unfinished ...>
[pid 15144] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15144] setpgid(0, 0)               = 0
[pid 15144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15144] write(3, "1000", 4)         = 4
executing program
[pid 15144] close(3)                    = 0
[pid 15144] write(1, "executing program\n", 18) = 18
[pid 15144] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15144] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15144] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15144] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15144
[pid 15144] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15144] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15145]}, 88) = 15145
[pid 15144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15145 attached
 <unfinished ...>
[pid 15145] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15145] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15145] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15144] <... futex resumed>)        = 0
[pid 15144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15145] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15144] <... futex resumed>)        = 0
[pid 15144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15145] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15144] <... futex resumed>)        = 0
[pid 15144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15145] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15144] <... futex resumed>)        = 0
[pid 15144] exit_group(0)               = ?
[pid 15145] +++ exited with 0 +++
[pid 15144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15146 attached
, child_tidptr=0x55557060c690) = 15146
[pid 15146] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15146] setpgid(0, 0)               = 0
[pid 15146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15146] write(3, "1000", 4)         = 4
[pid 15146] close(3)                    = 0
[pid 15146] write(1, "executing program\n", 18executing program
) = 18
[pid 15146] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15146] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15146] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15146] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15146] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15147 attached
 => {parent_tid=[15147]}, 88) = 15147
[pid 15147] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15147] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15146] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15147] <... futex resumed>)        = 0
[pid 15147] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15147] <... futex resumed>)        = 0
[pid 15147] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15147] <... futex resumed>)        = 0
[pid 15147] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15147] <... futex resumed>)        = 0
[pid 15147] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15146] exit_group(0)               = ?
[pid 15147] <... futex resumed>)        = ?
[pid 15147] +++ exited with 0 +++
[pid 15146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15148 attached
, child_tidptr=0x55557060c690) = 15148
[pid 15148] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15148] setpgid(0, 0)               = 0
[pid 15148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15148] write(3, "1000", 4)         = 4
[pid 15148] close(3)                    = 0
[pid 15148] write(1, "executing program\n", 18executing program
) = 18
[pid 15148] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15148] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15148] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15148] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15149]}, 88) = 15149
[pid 15148] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15149 attached
 <unfinished ...>
[pid 15149] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15149] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15149] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15148] <... futex resumed>)        = 0
[pid 15148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15149] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15148] <... futex resumed>)        = 0
[pid 15148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15149] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15148] <... futex resumed>)        = 0
[pid 15148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15149] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15148] <... futex resumed>)        = 0
[pid 15148] exit_group(0)               = ?
[pid 15149] +++ exited with 0 +++
[pid 15148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15150 attached
 <unfinished ...>
[pid 15150] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15150] setpgid(0, 0)               = 0
[pid 15150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15150] write(3, "1000", 4)         = 4
executing program
[pid 15150] close(3)                    = 0
[pid 15150] write(1, "executing program\n", 18) = 18
[pid 15150] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15150] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15150] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15150] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15150] rt_sigprocmask(SIG_BLOCK, ~[],  <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15150
[pid 15150] <... rt_sigprocmask resumed>[], 8) = 0
[pid 15150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15151]}, 88) = 15151
[pid 15150] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15151 attached
 <unfinished ...>
[pid 15151] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15151] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15151] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15150] <... futex resumed>)        = 0
[pid 15150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15151] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15150] <... futex resumed>)        = 0
[pid 15150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15151] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15150] <... futex resumed>)        = 0
[pid 15150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15151] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15150] <... futex resumed>)        = 0
[pid 15150] exit_group(0)               = ?
[pid 15151] +++ exited with 0 +++
[pid 15150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15152 attached
, child_tidptr=0x55557060c690) = 15152
[pid 15152] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15152] setpgid(0, 0)               = 0
[pid 15152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15152] write(3, "1000", 4)         = 4
[pid 15152] close(3)                    = 0
[pid 15152] write(1, "executing program\n", 18executing program
) = 18
[pid 15152] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15152] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15152] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15152] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15152] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15152] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15153 attached
 => {parent_tid=[15153]}, 88) = 15153
[pid 15153] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15153] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15152] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15153] <... futex resumed>)        = 0
[pid 15153] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15153] <... futex resumed>)        = 0
[pid 15153] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15153] <... futex resumed>)        = 0
[pid 15153] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15153] <... futex resumed>)        = 0
[pid 15153] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15152] exit_group(0)               = ?
[pid 15153] <... futex resumed>)        = ?
[pid 15153] +++ exited with 0 +++
[pid 15152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15154
./strace-static-x86_64: Process 15154 attached
[pid 15154] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15154] setpgid(0, 0)               = 0
[pid 15154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15154] write(3, "1000", 4)         = 4
[pid 15154] close(3)                    = 0
[pid 15154] write(1, "executing program\n", 18executing program
) = 18
[pid 15154] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15154] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15154] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15154] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15154] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15154] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15155 attached
 => {parent_tid=[15155]}, 88) = 15155
[pid 15155] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15155] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15154] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15155] <... futex resumed>)        = 0
[pid 15155] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15155] <... futex resumed>)        = 0
[pid 15155] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15155] <... futex resumed>)        = 0
[pid 15155] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15155] <... futex resumed>)        = 0
[pid 15155] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15155] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15154] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15154] exit_group(0)               = ?
[pid 15155] <... futex resumed>)        = ?
[pid 15155] +++ exited with 0 +++
[pid 15154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15156 attached
 <unfinished ...>
[pid 15156] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15156] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15156
[pid 15156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15156] write(3, "1000", 4)         = 4
[pid 15156] close(3)                    = 0
[pid 15156] write(1, "executing program\n", 18executing program
) = 18
[pid 15156] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15156] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15156] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15156] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15156] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15157]}, 88) = 15157
[pid 15156] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15157 attached
 <unfinished ...>
[pid 15157] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15157] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15157] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15156] <... futex resumed>)        = 0
[pid 15156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15157] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15156] <... futex resumed>)        = 0
[pid 15156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15157] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15156] <... futex resumed>)        = 0
[pid 15156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15157] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15156] <... futex resumed>)        = 0
[pid 15156] exit_group(0)               = ?
[pid 15157] +++ exited with 0 +++
[pid 15156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15158 attached
 <unfinished ...>
[pid 15158] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15158
[pid 15158] setpgid(0, 0)               = 0
[pid 15158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15158] write(3, "1000", 4)         = 4
[pid 15158] close(3)                    = 0
[pid 15158] write(1, "executing program\n", 18executing program
) = 18
[pid 15158] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15158] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15158] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15158] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15158] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15158] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15159 attached
 => {parent_tid=[15159]}, 88) = 15159
[pid 15159] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15159] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15158] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15159] <... futex resumed>)        = 0
[pid 15159] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15159] <... futex resumed>)        = 0
[pid 15159] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15159] <... futex resumed>)        = 0
[pid 15159] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15159] <... futex resumed>)        = 0
[pid 15159] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15158] exit_group(0)               = ?
[pid 15159] <... futex resumed>)        = ?
[pid 15159] +++ exited with 0 +++
[pid 15158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15160
./strace-static-x86_64: Process 15160 attached
[pid 15160] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15160] setpgid(0, 0)               = 0
[pid 15160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15160] write(3, "1000", 4)         = 4
[pid 15160] close(3)                    = 0
[pid 15160] write(1, "executing program\n", 18executing program
) = 18
[pid 15160] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15160] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15160] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15160] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15160] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15160] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15161]}, 88) = 15161
[pid 15160] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15161 attached
 <unfinished ...>
[pid 15161] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15161] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15161] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15160] <... futex resumed>)        = 0
[pid 15160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15161] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15160] <... futex resumed>)        = 0
[pid 15160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15161] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15160] <... futex resumed>)        = 0
[pid 15160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15161] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15160] <... futex resumed>)        = 0
[pid 15160] exit_group(0)               = ?
[pid 15161] +++ exited with 0 +++
[pid 15160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15162
./strace-static-x86_64: Process 15162 attached
[pid 15162] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15162] setpgid(0, 0)               = 0
[pid 15162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15162] write(3, "1000", 4)         = 4
[pid 15162] close(3)                    = 0
[pid 15162] write(1, "executing program\n", 18executing program
) = 18
[pid 15162] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15162] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15162] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15162] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15163 attached
 => {parent_tid=[15163]}, 88) = 15163
[pid 15163] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15162] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15163] <... futex resumed>)        = 0
[pid 15163] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15163] <... futex resumed>)        = 0
[pid 15163] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15163] <... futex resumed>)        = 0
[pid 15162] <... futex resumed>)        = 1
[pid 15163] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15163] <... futex resumed>)        = 0
[pid 15163] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15162] exit_group(0)               = ?
[pid 15163] <... futex resumed>)        = ?
[pid 15163] +++ exited with 0 +++
[pid 15162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15164
./strace-static-x86_64: Process 15164 attached
[pid 15164] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15164] setpgid(0, 0)               = 0
[pid 15164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15164] write(3, "1000", 4)         = 4
[pid 15164] close(3)                    = 0
executing program
[pid 15164] write(1, "executing program\n", 18) = 18
[pid 15164] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15164] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15164] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15164] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15164] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15164] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15165 attached
 <unfinished ...>
[pid 15165] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15164] <... clone3 resumed> => {parent_tid=[15165]}, 88) = 15165
[pid 15164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15165] <... futex resumed>)        = 0
[pid 15164] <... futex resumed>)        = 1
[pid 15165] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15165] <... futex resumed>)        = 0
[pid 15165] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15165] <... futex resumed>)        = 0
[pid 15164] <... futex resumed>)        = 1
[pid 15165] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15165] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15164] <... futex resumed>)        = 0
[pid 15164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15165] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15164] <... futex resumed>)        = 0
[pid 15165] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15164] <... futex resumed>)        = 0
[pid 15165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15164] exit_group(0)               = ?
[pid 15165] <... futex resumed>)        = ?
[pid 15165] +++ exited with 0 +++
[pid 15164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15166
./strace-static-x86_64: Process 15166 attached
[pid 15166] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15166] setpgid(0, 0)               = 0
[pid 15166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15166] write(3, "1000", 4)         = 4
[pid 15166] close(3)                    = 0
[pid 15166] write(1, "executing program\n", 18executing program
) = 18
[pid 15166] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15166] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15166] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15166] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15166] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15166] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15167 attached
 => {parent_tid=[15167]}, 88) = 15167
[pid 15166] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15167] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15167] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15167] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15167] <... futex resumed>)        = 0
[pid 15167] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15167] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15167] <... futex resumed>)        = 0
[pid 15167] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15167] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15167] <... futex resumed>)        = 0
[pid 15166] <... futex resumed>)        = 1
[pid 15167] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15167] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15167] <... futex resumed>)        = 0
[pid 15167] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15167] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15167] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15166] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15166] exit_group(0)               = ?
[pid 15167] <... futex resumed>)        = ?
[pid 15167] +++ exited with 0 +++
[pid 15166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15168 attached
, child_tidptr=0x55557060c690) = 15168
[pid 15168] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15168] setpgid(0, 0)               = 0
[pid 15168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15168] write(3, "1000", 4executing program
)         = 4
[pid 15168] close(3)                    = 0
[pid 15168] write(1, "executing program\n", 18) = 18
[pid 15168] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15168] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15168] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15169]}, 88) = 15169
[pid 15168] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15169 attached
 <unfinished ...>
[pid 15169] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15169] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15169] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15168] <... futex resumed>)        = 0
[pid 15168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15169] <... futex resumed>)        = 1
[pid 15169] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15168] <... futex resumed>)        = 0
[pid 15168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15169] <... futex resumed>)        = 1
[pid 15169] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15168] <... futex resumed>)        = 0
[pid 15168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15169] <... futex resumed>)        = 1
[pid 15169] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15168] <... futex resumed>)        = 0
[pid 15168] exit_group(0)               = ?
[pid 15169] <... futex resumed>)        = ?
[pid 15169] +++ exited with 0 +++
[pid 15168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15170 attached
, child_tidptr=0x55557060c690) = 15170
[pid 15170] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15170] setpgid(0, 0)               = 0
[pid 15170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15170] write(3, "1000", 4)         = 4
[pid 15170] close(3)                    = 0
[pid 15170] write(1, "executing program\n", 18executing program
) = 18
[pid 15170] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15170] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15170] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15170] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15171 attached
 => {parent_tid=[15171]}, 88) = 15171
[pid 15171] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15171] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15171] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15171] <... futex resumed>)        = 0
[pid 15171] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15171] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15171] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15170] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15171] <... futex resumed>)        = 0
[pid 15170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15171] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15171] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15170] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15171] <... futex resumed>)        = 0
[pid 15170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15171] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15171] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15170] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15171] <... futex resumed>)        = 0
[pid 15170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15171] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15170] <... futex resumed>)        = 0
[pid 15171] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15170] exit_group(0)               = ?
[pid 15171] <... futex resumed>)        = ?
[pid 15171] +++ exited with 0 +++
[pid 15170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15172 attached
, child_tidptr=0x55557060c690) = 15172
[pid 15172] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15172] setpgid(0, 0)               = 0
[pid 15172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15172] write(3, "1000", 4)         = 4
[pid 15172] close(3)                    = 0
executing program
[pid 15172] write(1, "executing program\n", 18) = 18
[pid 15172] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15172] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15172] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15172] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15173 attached
 => {parent_tid=[15173]}, 88) = 15173
[pid 15173] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15173] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15173] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15172] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15173] <... futex resumed>)        = 0
[pid 15172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15173] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15173] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15172] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15173] <... futex resumed>)        = 0
[pid 15172] <... futex resumed>)        = 1
[pid 15173] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15173] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15173] <... futex resumed>)        = 0
[pid 15172] <... futex resumed>)        = 1
[pid 15173] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15173] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15172] <... futex resumed>)        = 0
[pid 15172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15173] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15172] <... futex resumed>)        = 0
[pid 15173] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15172] exit_group(0)               = ?
[pid 15173] <... futex resumed>)        = ?
[pid 15173] +++ exited with 0 +++
[pid 15172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15174
./strace-static-x86_64: Process 15174 attached
[pid 15174] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15174] setpgid(0, 0)               = 0
[pid 15174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15174] write(3, "1000", 4)         = 4
[pid 15174] close(3)                    = 0
executing program
[pid 15174] write(1, "executing program\n", 18) = 18
[pid 15174] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15174] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15174] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15175 attached
 => {parent_tid=[15175]}, 88) = 15175
[pid 15175] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15175] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15174] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15175] <... futex resumed>)        = 0
[pid 15174] <... futex resumed>)        = 1
[pid 15175] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15175] <... futex resumed>)        = 0
[pid 15174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15175] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15174] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15175] <... futex resumed>)        = 0
[pid 15174] <... futex resumed>)        = 1
[pid 15175] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15175] <... futex resumed>)        = 0
[pid 15174] <... futex resumed>)        = 1
[pid 15175] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15174] exit_group(0)               = ?
[pid 15175] <... futex resumed>)        = ?
[pid 15175] +++ exited with 0 +++
[pid 15174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15176
./strace-static-x86_64: Process 15176 attached
[pid 15176] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15176] setpgid(0, 0)               = 0
[pid 15176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15176] write(3, "1000", 4)         = 4
[pid 15176] close(3)                    = 0
[pid 15176] write(1, "executing program\n", 18executing program
) = 18
[pid 15176] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15176] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15176] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15176] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15176] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15176] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15177]}, 88) = 15177
[pid 15176] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15177 attached
 <unfinished ...>
[pid 15177] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15177] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15177] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15176] <... futex resumed>)        = 0
[pid 15176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15177] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15176] <... futex resumed>)        = 0
[pid 15176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15177] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15177] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15176] <... futex resumed>)        = 0
[pid 15176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15177] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15176] <... futex resumed>)        = 0
[pid 15176] exit_group(0)               = ?
[pid 15177] +++ exited with 0 +++
[pid 15176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15178 attached
 <unfinished ...>
[pid 15178] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15178
[pid 15178] setpgid(0, 0)               = 0
[pid 15178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15178] write(3, "1000", 4)         = 4
[pid 15178] close(3)                    = 0
[pid 15178] write(1, "executing program\n", 18executing program
) = 18
[pid 15178] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15178] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15178] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15178] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15178] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15178] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15179 attached
 => {parent_tid=[15179]}, 88) = 15179
[pid 15179] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15179] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15179] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15178] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15179] <... futex resumed>)        = 0
[pid 15178] <... futex resumed>)        = 1
[pid 15179] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15179] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15179] <... futex resumed>)        = 0
[pid 15178] <... futex resumed>)        = 1
[pid 15179] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15179] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15179] <... futex resumed>)        = 0
[pid 15179] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15179] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15179] <... futex resumed>)        = 0
[pid 15179] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15179] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15178] exit_group(0)               = ?
[pid 15179] <... futex resumed>)        = ?
[pid 15179] +++ exited with 0 +++
[pid 15178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15180 attached
, child_tidptr=0x55557060c690) = 15180
[pid 15180] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15180] setpgid(0, 0)               = 0
[pid 15180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15180] write(3, "1000", 4executing program
)         = 4
[pid 15180] close(3)                    = 0
[pid 15180] write(1, "executing program\n", 18) = 18
[pid 15180] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15180] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15180] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15180] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15180] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15181]}, 88) = 15181
[pid 15180] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15181 attached
 <unfinished ...>
[pid 15181] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15181] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15181] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15180] <... futex resumed>)        = 0
[pid 15180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15181] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15180] <... futex resumed>)        = 0
[pid 15180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15181] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15180] <... futex resumed>)        = 0
[pid 15180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15181] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15180] <... futex resumed>)        = 0
[pid 15181] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15180] exit_group(0)               = ?
[pid 15181] <... futex resumed>)        = ?
[pid 15181] +++ exited with 0 +++
[pid 15180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15182
./strace-static-x86_64: Process 15182 attached
[pid 15182] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15182] setpgid(0, 0)               = 0
[pid 15182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15182] write(3, "1000", 4)         = 4
[pid 15182] close(3)                    = 0
[pid 15182] write(1, "executing program\n", 18executing program
) = 18
[pid 15182] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15182] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15182] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15182] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15182] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15182] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15183]}, 88) = 15183
[pid 15182] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15183 attached
 <unfinished ...>
[pid 15183] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15183] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15183] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15182] <... futex resumed>)        = 0
[pid 15182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15183] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15182] <... futex resumed>)        = 0
[pid 15182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15183] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15182] <... futex resumed>)        = 0
[pid 15182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15183] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15182] <... futex resumed>)        = 0
[pid 15182] exit_group(0)               = ?
[pid 15183] +++ exited with 0 +++
[pid 15182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15184 attached
 <unfinished ...>
[pid 15184] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15184] setpgid(0, 0)               = 0
[pid 15184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15184
[pid 15184] <... openat resumed>)       = 3
[pid 15184] write(3, "1000", 4)         = 4
[pid 15184] close(3)                    = 0
[pid 15184] write(1, "executing program\n", 18executing program
) = 18
[pid 15184] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15184] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15184] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15184] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15185 attached
 => {parent_tid=[15185]}, 88) = 15185
[pid 15185] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15185] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15185] <... futex resumed>)        = 0
[pid 15185] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15185] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15184] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15185] <... futex resumed>)        = 0
[pid 15185] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15185] <... futex resumed>)        = 0
[pid 15185] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15185] <... futex resumed>)        = 0
[pid 15185] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15184] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15184] exit_group(0)               = ?
[pid 15185] <... futex resumed>)        = ?
[pid 15185] +++ exited with 0 +++
[pid 15184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15186
./strace-static-x86_64: Process 15186 attached
[pid 15186] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15186] setpgid(0, 0)               = 0
[pid 15186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15186] write(3, "1000", 4)         = 4
[pid 15186] close(3)                    = 0
[pid 15186] write(1, "executing program\n", 18executing program
) = 18
[pid 15186] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15186] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15186] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15187]}, 88) = 15187
[pid 15186] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15187 attached
 <unfinished ...>
[pid 15187] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15187] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15187] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15186] <... futex resumed>)        = 0
[pid 15186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15187] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15186] <... futex resumed>)        = 0
[pid 15186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15187] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15187] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15186] <... futex resumed>)        = 0
[pid 15186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15187] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15186] <... futex resumed>)        = 0
[pid 15186] exit_group(0)               = ?
[pid 15187] +++ exited with 0 +++
[pid 15186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15188
./strace-static-x86_64: Process 15188 attached
[pid 15188] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15188] setpgid(0, 0)               = 0
[pid 15188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15188] write(3, "1000", 4)         = 4
[pid 15188] close(3)                    = 0
[pid 15188] write(1, "executing program\n", 18executing program
) = 18
[pid 15188] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15188] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15188] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15188] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15188] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15188] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15189 attached
 => {parent_tid=[15189]}, 88) = 15189
[pid 15189] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15189] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15188] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15189] <... futex resumed>)        = 0
[pid 15188] <... futex resumed>)        = 1
[pid 15189] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15189] <... futex resumed>)        = 0
[pid 15189] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15189] <... futex resumed>)        = 0
[pid 15188] <... futex resumed>)        = 1
[pid 15189] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15189] <... futex resumed>)        = 0
[pid 15189] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15189] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15188] exit_group(0)               = ?
[pid 15189] <... futex resumed>)        = ?
[pid 15189] +++ exited with 0 +++
[pid 15188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15190
./strace-static-x86_64: Process 15190 attached
[pid 15190] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15190] setpgid(0, 0)               = 0
[pid 15190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15190] write(3, "1000", 4)         = 4
[pid 15190] close(3)                    = 0
[pid 15190] write(1, "executing program\n", 18executing program
) = 18
[pid 15190] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15190] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15190] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15190] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15191]}, 88) = 15191
[pid 15190] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15191 attached
 <unfinished ...>
[pid 15191] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15191] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15191] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15190] <... futex resumed>)        = 0
[pid 15190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15191] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15190] <... futex resumed>)        = 0
[pid 15190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15191] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15190] <... futex resumed>)        = 0
[pid 15190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15191] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15190] <... futex resumed>)        = 0
[pid 15190] exit_group(0)               = ?
[pid 15191] +++ exited with 0 +++
[pid 15190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15192 attached
, child_tidptr=0x55557060c690) = 15192
[pid 15192] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15192] setpgid(0, 0)               = 0
[pid 15192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15192] write(3, "1000", 4)         = 4
[pid 15192] close(3executing program
)                    = 0
[pid 15192] write(1, "executing program\n", 18) = 18
[pid 15192] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15192] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15192] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15193 attached
 => {parent_tid=[15193]}, 88) = 15193
[pid 15193] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15193] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15192] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15193] <... futex resumed>)        = 0
[pid 15193] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15192] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15193] <... futex resumed>)        = 0
[pid 15193] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15193] <... futex resumed>)        = 0
[pid 15193] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15193] <... futex resumed>)        = 0
[pid 15192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15193] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15192] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15192] exit_group(0)               = ?
[pid 15193] <... futex resumed>)        = ?
[pid 15193] +++ exited with 0 +++
[pid 15192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15194
./strace-static-x86_64: Process 15194 attached
[pid 15194] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15194] setpgid(0, 0)               = 0
[pid 15194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15194] write(3, "1000", 4)         = 4
[pid 15194] close(3executing program
)                    = 0
[pid 15194] write(1, "executing program\n", 18) = 18
[pid 15194] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15194] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15194] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15194] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15195 attached
 => {parent_tid=[15195]}, 88) = 15195
[pid 15195] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15195] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15194] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15195] <... futex resumed>)        = 0
[pid 15194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15195] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15194] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15195] <... futex resumed>)        = 0
[pid 15194] <... futex resumed>)        = 1
[pid 15195] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15195] <... futex resumed>)        = 0
[pid 15194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15195] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15194] <... futex resumed>)        = 0
[pid 15194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15195] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15194] <... futex resumed>)        = 0
[pid 15195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15194] exit_group(0)               = ?
[pid 15195] <... futex resumed>)        = ?
[pid 15195] +++ exited with 0 +++
[pid 15194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15194, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15196
./strace-static-x86_64: Process 15196 attached
[pid 15196] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15196] setpgid(0, 0)               = 0
[pid 15196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15196] write(3, "1000", 4)         = 4
[pid 15196] close(3)                    = 0
[pid 15196] write(1, "executing program\n", 18executing program
) = 18
[pid 15196] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15196] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15196] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15196] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15197 attached
 => {parent_tid=[15197]}, 88) = 15197
[pid 15197] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15197] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15197] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15196] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15197] <... futex resumed>)        = 0
[pid 15196] <... futex resumed>)        = 1
[pid 15197] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15197] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15197] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15197] <... futex resumed>)        = 0
[pid 15196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15197] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15197] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15197] <... futex resumed>)        = 0
[pid 15196] <... futex resumed>)        = 1
[pid 15197] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15197] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15197] <... futex resumed>)        = 0
[pid 15196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15197] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15197] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15196] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15196] exit_group(0 <unfinished ...>
[pid 15197] <... futex resumed>)        = ?
[pid 15197] +++ exited with 0 +++
[pid 15196] <... exit_group resumed>)   = ?
[pid 15196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15198
./strace-static-x86_64: Process 15198 attached
[pid 15198] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15198] setpgid(0, 0)               = 0
[pid 15198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15198] write(3, "1000", 4)         = 4
[pid 15198] close(3executing program
)                    = 0
[pid 15198] write(1, "executing program\n", 18) = 18
[pid 15198] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15198] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15198] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15199 attached
 => {parent_tid=[15199]}, 88) = 15199
[pid 15199] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15199] <... futex resumed>)        = 0
[pid 15198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15199] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15199] <... futex resumed>)        = 0
[pid 15198] <... futex resumed>)        = 1
[pid 15199] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15199] <... futex resumed>)        = 0
[pid 15198] <... futex resumed>)        = 1
[pid 15199] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15199] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15199] <... futex resumed>)        = 0
[pid 15198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15199] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15198] <... futex resumed>)        = 0
[pid 15199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15198] exit_group(0)               = ?
[pid 15199] <... futex resumed>)        = ?
[pid 15199] +++ exited with 0 +++
[pid 15198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program
, child_tidptr=0x55557060c690) = 15200
./strace-static-x86_64: Process 15200 attached
[pid 15200] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15200] setpgid(0, 0)               = 0
[pid 15200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15200] write(3, "1000", 4)         = 4
[pid 15200] close(3)                    = 0
[pid 15200] write(1, "executing program\n", 18) = 18
[pid 15200] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15200] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15200] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15200] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15200] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15200] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15201 attached
 => {parent_tid=[15201]}, 88) = 15201
[pid 15201] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15201] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15201] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15200] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15201] <... futex resumed>)        = 0
[pid 15200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15201] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15201] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15201] <... futex resumed>)        = 0
[pid 15201] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15201] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15201] <... futex resumed>)        = 0
[pid 15200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15201] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15201] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15201] <... futex resumed>)        = 0
[pid 15201] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15201] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15201] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15200] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15200] exit_group(0)               = ?
[pid 15201] <... futex resumed>)        = ?
[pid 15201] +++ exited with 0 +++
[pid 15200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15202
./strace-static-x86_64: Process 15202 attached
[pid 15202] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15202] setpgid(0, 0)               = 0
[pid 15202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15202] write(3, "1000", 4)         = 4
[pid 15202] close(3)                    = 0
[pid 15202] write(1, "executing program\n", 18executing program
) = 18
[pid 15202] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15202] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15202] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15202] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15203 attached
 => {parent_tid=[15203]}, 88) = 15203
[pid 15203] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15203] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15203] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15202] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15203] <... futex resumed>)        = 0
[pid 15202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15203] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15203] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15202] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15203] <... futex resumed>)        = 0
[pid 15203] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15203] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15202] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15203] <... futex resumed>)        = 0
[pid 15202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15203] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15202] <... futex resumed>)        = 0
[pid 15202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15203] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15202] <... futex resumed>)        = 0
[pid 15203] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15202] exit_group(0)               = ?
[pid 15203] <... futex resumed>)        = ?
[pid 15203] +++ exited with 0 +++
[pid 15202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15204
./strace-static-x86_64: Process 15204 attached
[pid 15204] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15204] setpgid(0, 0)               = 0
[pid 15204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15204] write(3, "1000", 4)         = 4
[pid 15204] close(3)                    = 0
executing program
[pid 15204] write(1, "executing program\n", 18) = 18
[pid 15204] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15204] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15204] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15205 attached
 <unfinished ...>
[pid 15205] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15205] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15204] <... clone3 resumed> => {parent_tid=[15205]}, 88) = 15205
[pid 15204] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15205] <... futex resumed>)        = 0
[pid 15204] <... futex resumed>)        = 1
[pid 15205] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15205] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15205] <... futex resumed>)        = 0
[pid 15204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15205] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15205] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15205] <... futex resumed>)        = 0
[pid 15205] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15205] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15205] <... futex resumed>)        = 0
[pid 15204] <... futex resumed>)        = 1
[pid 15204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15205] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15204] <... futex resumed>)        = 0
[pid 15205] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15204] exit_group(0)               = ?
[pid 15205] <... futex resumed>)        = ?
[pid 15205] +++ exited with 0 +++
[pid 15204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15206
./strace-static-x86_64: Process 15206 attached
[pid 15206] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15206] setpgid(0, 0)               = 0
[pid 15206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15206] write(3, "1000", 4)         = 4
[pid 15206] close(3executing program
)                    = 0
[pid 15206] write(1, "executing program\n", 18) = 18
[pid 15206] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15206] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15206] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15206] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15206] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15206] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15207]}, 88) = 15207
[pid 15206] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15207 attached
 <unfinished ...>
[pid 15207] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15207] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15207] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15206] <... futex resumed>)        = 0
[pid 15206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15207] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15206] <... futex resumed>)        = 0
[pid 15206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15207] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15207] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15206] <... futex resumed>)        = 0
[pid 15206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15207] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15206] <... futex resumed>)        = 0
[pid 15206] exit_group(0)               = ?
[pid 15207] +++ exited with 0 +++
[pid 15206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15208
./strace-static-x86_64: Process 15208 attached
[pid 15208] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15208] setpgid(0, 0)               = 0
[pid 15208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15208] write(3, "1000", 4)         = 4
[pid 15208] close(3)                    = 0
[pid 15208] write(1, "executing program\n", 18executing program
) = 18
[pid 15208] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15208] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15208] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15208] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15209 attached
 => {parent_tid=[15209]}, 88) = 15209
[pid 15209] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15209] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15208] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15209] <... futex resumed>)        = 0
[pid 15209] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15209] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15209] <... futex resumed>)        = 0
[pid 15209] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15209] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15209] <... futex resumed>)        = 0
[pid 15209] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15209] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15209] <... futex resumed>)        = 0
[pid 15209] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15208] <... futex resumed>)        = 1
[pid 15209] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15209] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15208] exit_group(0)               = ?
[pid 15209] <... futex resumed>)        = ?
[pid 15209] +++ exited with 0 +++
[pid 15208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15210
./strace-static-x86_64: Process 15210 attached
[pid 15210] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15210] setpgid(0, 0)               = 0
[pid 15210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15210] write(3, "1000", 4)         = 4
[pid 15210] close(3)                    = 0
executing program
[pid 15210] write(1, "executing program\n", 18) = 18
[pid 15210] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15210] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15210] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15211 attached
 => {parent_tid=[15211]}, 88) = 15211
[pid 15211] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15211] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15210] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15211] <... futex resumed>)        = 0
[pid 15210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15211] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15211] <... futex resumed>)        = 0
[pid 15211] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15211] <... futex resumed>)        = 0
[pid 15210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15211] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15211] <... futex resumed>)        = 0
[pid 15210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15211] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15210] exit_group(0)               = ?
[pid 15211] <... futex resumed>)        = ?
[pid 15211] +++ exited with 0 +++
[pid 15210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15212
./strace-static-x86_64: Process 15212 attached
[pid 15212] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15212] setpgid(0, 0)               = 0
[pid 15212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15212] write(3, "1000", 4)         = 4
[pid 15212] close(3)                    = 0
executing program
[pid 15212] write(1, "executing program\n", 18) = 18
[pid 15212] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15212] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15212] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15212] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15212] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15212] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15213 attached
 => {parent_tid=[15213]}, 88) = 15213
[pid 15213] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15213] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15213] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15212] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15213] <... futex resumed>)        = 0
[pid 15212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15213] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15213] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15212] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15213] <... futex resumed>)        = 0
[pid 15213] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15213] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15213] <... futex resumed>)        = 0
[pid 15212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15213] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15213] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15212] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15213] <... futex resumed>)        = 0
[pid 15212] <... futex resumed>)        = 1
[pid 15213] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15213] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15212] exit_group(0)               = ?
[pid 15213] <... futex resumed>)        = ?
[pid 15213] +++ exited with 0 +++
[pid 15212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15214
./strace-static-x86_64: Process 15214 attached
[pid 15214] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15214] setpgid(0, 0)               = 0
[pid 15214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15214] write(3, "1000", 4)         = 4
[pid 15214] close(3executing program
)                    = 0
[pid 15214] write(1, "executing program\n", 18) = 18
[pid 15214] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15214] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15214] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15214] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15215 attached
 <unfinished ...>
[pid 15215] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15215] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15214] <... clone3 resumed> => {parent_tid=[15215]}, 88) = 15215
[pid 15214] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15215] <... futex resumed>)        = 0
[pid 15215] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15215] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15215] <... futex resumed>)        = 0
[pid 15214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15215] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15215] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15214] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15215] <... futex resumed>)        = 0
[pid 15215] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15215] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15215] <... futex resumed>)        = 0
[pid 15214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15215] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15215] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15214] <... futex resumed>)        = 0
[pid 15214] exit_group(0)               = ?
[pid 15215] <... futex resumed>)        = ?
[pid 15215] +++ exited with 0 +++
[pid 15214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15216 attached
, child_tidptr=0x55557060c690) = 15216
[pid 15216] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15216] setpgid(0, 0)               = 0
[pid 15216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15216] write(3, "1000", 4)         = 4
[pid 15216] close(3)                    = 0
[pid 15216] write(1, "executing program\n", 18executing program
) = 18
[pid 15216] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15216] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15216] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15216] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15217]}, 88) = 15217
./strace-static-x86_64: Process 15217 attached
[pid 15216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15217] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15217] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15217] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15216] <... futex resumed>)        = 0
[pid 15216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15217] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15216] <... futex resumed>)        = 0
[pid 15216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15217] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15216] <... futex resumed>)        = 0
[pid 15216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15217] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15216] <... futex resumed>)        = 0
[pid 15216] exit_group(0)               = ?
[pid 15217] +++ exited with 0 +++
[pid 15216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15218 attached
, child_tidptr=0x55557060c690) = 15218
[pid 15218] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15218] setpgid(0, 0)               = 0
[pid 15218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15218] write(3, "1000", 4)         = 4
[pid 15218] close(3)                    = 0
[pid 15218] write(1, "executing program\n", 18executing program
) = 18
[pid 15218] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15218] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15218] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15218] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15218] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15218] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15219]}, 88) = 15219
[pid 15218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15219 attached
 <unfinished ...>
[pid 15219] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15219] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15219] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15218] <... futex resumed>)        = 0
[pid 15218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15219] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15218] <... futex resumed>)        = 0
[pid 15218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15219] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15218] <... futex resumed>)        = 0
[pid 15219] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15219] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15218] <... futex resumed>)        = 0
[pid 15218] exit_group(0)               = ?
[pid 15219] +++ exited with 0 +++
[pid 15218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15220 attached
 <unfinished ...>
[pid 15220] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15220
[pid 15220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15220] setpgid(0, 0)               = 0
[pid 15220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15220] write(3, "1000", 4)         = 4
[pid 15220] close(3)                    = 0
[pid 15220] write(1, "executing program\n", 18executing program
) = 18
[pid 15220] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15220] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15220] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15220] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15220] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15220] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15221]}, 88) = 15221
[pid 15220] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15221 attached
 <unfinished ...>
[pid 15221] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15221] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15221] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15220] <... futex resumed>)        = 0
[pid 15220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15221] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15220] <... futex resumed>)        = 0
[pid 15220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15221] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15220] <... futex resumed>)        = 0
[pid 15220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15221] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15220] <... futex resumed>)        = 0
[pid 15220] exit_group(0)               = ?
[pid 15221] +++ exited with 0 +++
[pid 15220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15222
./strace-static-x86_64: Process 15222 attached
[pid 15222] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15222] setpgid(0, 0)               = 0
[pid 15222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15222] write(3, "1000", 4)         = 4
[pid 15222] close(3)                    = 0
[pid 15222] write(1, "executing program\n", 18executing program
) = 18
[pid 15222] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15222] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15222] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15223]}, 88) = 15223
[pid 15222] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15223 attached
 <unfinished ...>
[pid 15223] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15223] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15223] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15222] <... futex resumed>)        = 0
[pid 15222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15223] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15222] <... futex resumed>)        = 0
[pid 15222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15223] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15222] <... futex resumed>)        = 0
[pid 15222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15223] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15222] <... futex resumed>)        = 0
[pid 15222] exit_group(0)               = ?
[pid 15223] +++ exited with 0 +++
[pid 15222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15224 attached
 <unfinished ...>
[pid 15224] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15224] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15224
[pid 15224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15224] write(3, "1000", 4)         = 4
[pid 15224] close(3)                    = 0
[pid 15224] write(1, "executing program\n", 18executing program
) = 18
[pid 15224] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15224] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15224] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15224] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15224] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15224] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15225 attached
 => {parent_tid=[15225]}, 88) = 15225
[pid 15225] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15225] <... futex resumed>)        = 0
[pid 15225] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15225] <... futex resumed>)        = 0
[pid 15225] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15225] <... futex resumed>)        = 0
[pid 15225] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15225] <... futex resumed>)        = 0
[pid 15225] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15225] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15224] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15224] exit_group(0)               = ?
[pid 15225] <... futex resumed>)        = ?
[pid 15225] +++ exited with 0 +++
[pid 15224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15226
./strace-static-x86_64: Process 15226 attached
[pid 15226] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15226] setpgid(0, 0)               = 0
[pid 15226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15226] write(3, "1000", 4)         = 4
[pid 15226] close(3)                    = 0
[pid 15226] write(1, "executing program\n", 18executing program
) = 18
[pid 15226] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15226] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15226] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15226] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15227]}, 88) = 15227
[pid 15226] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15227 attached
 <unfinished ...>
[pid 15227] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15227] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15227] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15226] <... futex resumed>)        = 0
executing program
[pid 15226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15227] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15226] <... futex resumed>)        = 0
[pid 15226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15227] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15226] <... futex resumed>)        = 0
[pid 15226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15227] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15226] <... futex resumed>)        = 0
[pid 15226] exit_group(0)               = ?
[pid 15227] +++ exited with 0 +++
[pid 15226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15228 attached
 <unfinished ...>
[pid 15228] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15228] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15228
[pid 15228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15228] write(3, "1000", 4)         = 4
[pid 15228] close(3)                    = 0
[pid 15228] write(1, "executing program\n", 18) = 18
[pid 15228] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15228] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15228] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15229]}, 88) = 15229
[pid 15228] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15229 attached
 <unfinished ...>
[pid 15229] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15229] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15229] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15228] <... futex resumed>)        = 0
[pid 15228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15229] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15228] <... futex resumed>)        = 0
[pid 15228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15229] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15228] <... futex resumed>)        = 0
[pid 15228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15229] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15228] <... futex resumed>)        = 0
[pid 15228] exit_group(0)               = ?
[pid 15229] +++ exited with 0 +++
[pid 15228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15230 attached
 <unfinished ...>
[pid 15230] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15230
[pid 15230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15230] setpgid(0, 0)               = 0
[pid 15230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15230] write(3, "1000", 4)         = 4
[pid 15230] close(3)                    = 0
[pid 15230] write(1, "executing program\n", 18executing program
) = 18
[pid 15230] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15230] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15230] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15230] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15230] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15230] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15231]}, 88) = 15231
[pid 15230] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15231 attached
 <unfinished ...>
[pid 15231] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15231] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15231] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15230] <... futex resumed>)        = 0
[pid 15230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15231] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15230] <... futex resumed>)        = 0
[pid 15230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15231] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15230] <... futex resumed>)        = 0
[pid 15230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15231] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15230] <... futex resumed>)        = 0
[pid 15230] exit_group(0)               = ?
[pid 15231] +++ exited with 0 +++
[pid 15230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15232 attached
 <unfinished ...>
[pid 15232] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15232] setpgid(0, 0)               = 0
[pid 15232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15232
[pid 15232] <... openat resumed>)       = 3
[pid 15232] write(3, "1000", 4)         = 4
[pid 15232] close(3)                    = 0
executing program
[pid 15232] write(1, "executing program\n", 18) = 18
[pid 15232] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15232] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15232] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15232] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15232] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15232] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15233 attached
 => {parent_tid=[15233]}, 88) = 15233
[pid 15232] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15233] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15232] <... futex resumed>)        = 0
[pid 15232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15233] <... set_robust_list resumed>) = 0
[pid 15233] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15233] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15232] <... futex resumed>)        = 0
[pid 15232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15233] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15232] <... futex resumed>)        = 0
[pid 15232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15233] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15232] <... futex resumed>)        = 0
[pid 15232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15233] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15232] <... futex resumed>)        = 0
[pid 15232] exit_group(0)               = ?
[pid 15233] +++ exited with 0 +++
[pid 15232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15234
./strace-static-x86_64: Process 15234 attached
[pid 15234] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15234] setpgid(0, 0)               = 0
[pid 15234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15234] write(3, "1000", 4)         = 4
[pid 15234] close(3)                    = 0
[pid 15234] write(1, "executing program\n", 18executing program
) = 18
[pid 15234] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15234] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15234] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15234] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15235 attached
 => {parent_tid=[15235]}, 88) = 15235
[pid 15235] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15235] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15234] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15235] <... futex resumed>)        = 0
[pid 15235] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15235] <... futex resumed>)        = 0
[pid 15235] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15235] <... futex resumed>)        = 0
[pid 15235] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15235] <... futex resumed>)        = 0
[pid 15235] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15234] exit_group(0)               = ?
[pid 15235] <... futex resumed>)        = ?
[pid 15235] +++ exited with 0 +++
[pid 15234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15236
./strace-static-x86_64: Process 15236 attached
[pid 15236] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15236] setpgid(0, 0)               = 0
[pid 15236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15236] write(3, "1000", 4)         = 4
[pid 15236] close(3)                    = 0
[pid 15236] write(1, "executing program\n", 18executing program
) = 18
[pid 15236] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15236] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15236] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15236] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15236] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15236] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15237]}, 88) = 15237
[pid 15236] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15237 attached
 <unfinished ...>
[pid 15237] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15237] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15237] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15236] <... futex resumed>)        = 0
[pid 15236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15237] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15236] <... futex resumed>)        = 0
[pid 15236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15237] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15236] <... futex resumed>)        = 0
[pid 15236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15237] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15236] <... futex resumed>)        = 0
[pid 15236] exit_group(0)               = ?
[pid 15237] +++ exited with 0 +++
[pid 15236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15238
./strace-static-x86_64: Process 15238 attached
[pid 15238] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15238] setpgid(0, 0)               = 0
[pid 15238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15238] write(3, "1000", 4)         = 4
[pid 15238] close(3)                    = 0
[pid 15238] write(1, "executing program\n", 18) = 18
[pid 15238] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15238] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15238] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15238] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15239 attached
 => {parent_tid=[15239]}, 88) = 15239
[pid 15239] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15239] <... futex resumed>)        = 0
[pid 15239] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15239] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15238] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15239] <... futex resumed>)        = 0
[pid 15239] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15238] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15239] <... futex resumed>)        = 0
[pid 15239] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15238] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15239] <... futex resumed>)        = 0
[pid 15239] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15239] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15238] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15238] exit_group(0)               = ?
[pid 15239] <... futex resumed>)        = ?
[pid 15239] +++ exited with 0 +++
[pid 15238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15240
./strace-static-x86_64: Process 15240 attached
[pid 15240] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15240] setpgid(0, 0)               = 0
[pid 15240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15240] write(3, "1000", 4)         = 4
[pid 15240] close(3)                    = 0
[pid 15240] write(1, "executing program\n", 18executing program
) = 18
[pid 15240] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15240] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15240] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15240] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15241]}, 88) = 15241
[pid 15240] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15241 attached
 <unfinished ...>
[pid 15241] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15241] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15241] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15240] <... futex resumed>)        = 0
[pid 15240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15241] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15240] <... futex resumed>)        = 0
[pid 15240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15241] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15241] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15240] <... futex resumed>)        = 0
[pid 15240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15241] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15240] <... futex resumed>)        = 0
[pid 15240] exit_group(0)               = ?
[pid 15241] +++ exited with 0 +++
[pid 15240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15242
./strace-static-x86_64: Process 15242 attached
[pid 15242] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15242] setpgid(0, 0)               = 0
[pid 15242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15242] write(3, "1000", 4)         = 4
[pid 15242] close(3)                    = 0
[pid 15242] write(1, "executing program\n", 18executing program
) = 18
[pid 15242] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15242] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15242] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15242] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15243 attached
 => {parent_tid=[15243]}, 88) = 15243
[pid 15243] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15243] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15243] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15242] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15243] <... futex resumed>)        = 0
[pid 15243] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15243] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15243] <... futex resumed>)        = 0
[pid 15243] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15243] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15243] <... futex resumed>)        = 0
[pid 15243] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15243] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15243] <... futex resumed>)        = 0
[pid 15242] <... futex resumed>)        = 1
[pid 15243] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15243] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15243] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15242] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15242] exit_group(0)               = ?
[pid 15243] <... futex resumed>)        = ?
[pid 15243] +++ exited with 0 +++
[pid 15242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15244
./strace-static-x86_64: Process 15244 attached
[pid 15244] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15244] setpgid(0, 0)               = 0
[pid 15244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15244] write(3, "1000", 4)         = 4
[pid 15244] close(3)                    = 0
[pid 15244] write(1, "executing program\n", 18executing program
) = 18
[pid 15244] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15244] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15244] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15244] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15244] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15244] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15245 attached
 => {parent_tid=[15245]}, 88) = 15245
[pid 15245] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15245] <... futex resumed>)        = 0
[pid 15244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15245] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15244] <... futex resumed>)        = 0
[pid 15244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15245] <... futex resumed>)        = 0
[pid 15244] <... futex resumed>)        = 1
[pid 15245] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15245] <... futex resumed>)        = 0
[pid 15244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15245] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15244] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15245] <... futex resumed>)        = 0
[pid 15245] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15244] exit_group(0)               = ?
[pid 15245] <... futex resumed>)        = ?
[pid 15245] +++ exited with 0 +++
[pid 15244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15246 attached
, child_tidptr=0x55557060c690) = 15246
[pid 15246] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15246] setpgid(0, 0)               = 0
[pid 15246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15246] write(3, "1000", 4)         = 4
[pid 15246] close(3)                    = 0
[pid 15246] write(1, "executing program\n", 18executing program
) = 18
[pid 15246] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15246] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15246] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15247]}, 88) = 15247
[pid 15246] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15247 attached
 <unfinished ...>
[pid 15247] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15247] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15247] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15246] <... futex resumed>)        = 0
[pid 15246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15247] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15246] <... futex resumed>)        = 0
[pid 15246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15247] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15246] <... futex resumed>)        = 0
[pid 15246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15247] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15247] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15246] <... futex resumed>)        = 0
[pid 15246] exit_group(0)               = ?
[pid 15247] +++ exited with 0 +++
[pid 15246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15248
./strace-static-x86_64: Process 15248 attached
[pid 15248] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15248] setpgid(0, 0)               = 0
[pid 15248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15248] write(3, "1000", 4)         = 4
[pid 15248] close(3)                    = 0
[pid 15248] write(1, "executing program\n", 18executing program
) = 18
[pid 15248] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15248] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15248] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15248] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15248] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15248] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15249 attached
 => {parent_tid=[15249]}, 88) = 15249
[pid 15249] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15249] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15248] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15249] <... futex resumed>)        = 0
[pid 15248] <... futex resumed>)        = 1
[pid 15249] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15249] <... futex resumed>)        = 0
[pid 15249] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15249] <... futex resumed>)        = 0
[pid 15249] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15249] <... futex resumed>)        = 0
[pid 15249] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15248] exit_group(0)               = ?
[pid 15249] <... futex resumed>)        = ?
[pid 15249] +++ exited with 0 +++
[pid 15248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15250 attached
, child_tidptr=0x55557060c690) = 15250
[pid 15250] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15250] setpgid(0, 0)               = 0
[pid 15250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15250] write(3, "1000", 4)         = 4
[pid 15250] close(3)                    = 0
executing program
[pid 15250] write(1, "executing program\n", 18) = 18
[pid 15250] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15250] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15250] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15250] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15251 attached
 <unfinished ...>
[pid 15251] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15251] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15250] <... clone3 resumed> => {parent_tid=[15251]}, 88) = 15251
[pid 15250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15251] <... futex resumed>)        = 0
[pid 15250] <... futex resumed>)        = 1
[pid 15251] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15251] <... futex resumed>)        = 0
[pid 15250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15251] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15251] <... futex resumed>)        = 0
[pid 15251] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15251] <... futex resumed>)        = 0
[pid 15250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15251] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15250] <... futex resumed>)        = 0
[pid 15251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15250] exit_group(0)               = ?
[pid 15251] <... futex resumed>)        = ?
[pid 15251] +++ exited with 0 +++
[pid 15250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15252
./strace-static-x86_64: Process 15252 attached
[pid 15252] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15252] setpgid(0, 0)               = 0
[pid 15252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15252] write(3, "1000", 4)         = 4
[pid 15252] close(3)                    = 0
[pid 15252] write(1, "executing program\n", 18executing program
) = 18
[pid 15252] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15252] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15252] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15253 attached
 <unfinished ...>
[pid 15253] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15253] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15252] <... clone3 resumed> => {parent_tid=[15253]}, 88) = 15253
[pid 15252] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15253] <... futex resumed>)        = 0
[pid 15253] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15253] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15252] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15253] <... futex resumed>)        = 0
[pid 15253] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15253] <... futex resumed>)        = 0
[pid 15253] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15253] <... futex resumed>)        = 0
[pid 15253] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15252] exit_group(0)               = ?
[pid 15253] <... futex resumed>)        = ?
[pid 15253] +++ exited with 0 +++
[pid 15252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15254
./strace-static-x86_64: Process 15254 attached
[pid 15254] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15254] setpgid(0, 0)               = 0
[pid 15254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15254] write(3, "1000", 4)         = 4
[pid 15254] close(3)                    = 0
[pid 15254] write(1, "executing program\n", 18executing program
) = 18
[pid 15254] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15254] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15254] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15254] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15255 attached
 => {parent_tid=[15255]}, 88) = 15255
[pid 15255] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15255] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15254] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15255] <... futex resumed>)        = 0
[pid 15254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15255] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15254] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15255] <... futex resumed>)        = 0
[pid 15254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15255] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15254] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15255] <... futex resumed>)        = 0
[pid 15254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15255] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15254] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15255] <... futex resumed>)        = 0
[pid 15255] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15255] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15254] <... futex resumed>)        = 0
[pid 15255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15254] exit_group(0)               = ?
[pid 15255] <... futex resumed>)        = ?
[pid 15255] +++ exited with 0 +++
[pid 15254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15256
./strace-static-x86_64: Process 15256 attached
[pid 15256] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15256] setpgid(0, 0)               = 0
[pid 15256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15256] write(3, "1000", 4)         = 4
[pid 15256] close(3executing program
)                    = 0
[pid 15256] write(1, "executing program\n", 18) = 18
[pid 15256] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15256] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15256] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15256] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15257 attached
 => {parent_tid=[15257]}, 88) = 15257
[pid 15257] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15256] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15256] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15257] <... futex resumed>)        = 0
[pid 15257] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15257] <... futex resumed>)        = 0
[pid 15256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15257] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15256] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15257] <... futex resumed>)        = 0
[pid 15256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15257] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15256] <... futex resumed>)        = 0
[pid 15257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15257] <... futex resumed>)        = 0
[pid 15256] <... futex resumed>)        = 1
[pid 15256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15257] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15256] <... futex resumed>)        = 0
[pid 15257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15256] exit_group(0)               = ?
[pid 15257] <... futex resumed>)        = ?
[pid 15257] +++ exited with 0 +++
[pid 15256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15258
./strace-static-x86_64: Process 15258 attached
[pid 15258] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15258] setpgid(0, 0)               = 0
[pid 15258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15258] write(3, "1000", 4)         = 4
[pid 15258] close(3)                    = 0
[pid 15258] write(1, "executing program\n", 18executing program
) = 18
[pid 15258] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15258] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15258] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15258] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15259 attached
 => {parent_tid=[15259]}, 88) = 15259
[pid 15259] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15259] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15258] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15259] <... futex resumed>)        = 0
[pid 15258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15259] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15259] <... futex resumed>)        = 0
[pid 15259] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15259] <... futex resumed>)        = 0
[pid 15259] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15259] <... futex resumed>)        = 0
[pid 15258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15259] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15258] <... futex resumed>)        = 0
[pid 15258] exit_group(0)               = ?
[pid 15259] <... futex resumed>)        = ?
[pid 15259] +++ exited with 0 +++
[pid 15258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15260
./strace-static-x86_64: Process 15260 attached
[pid 15260] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15260] setpgid(0, 0)               = 0
[pid 15260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15260] write(3, "1000", 4)         = 4
[pid 15260] close(3)                    = 0
[pid 15260] write(1, "executing program\n", 18executing program
) = 18
[pid 15260] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15260] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15260] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15260] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15260] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15260] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15261 attached
 => {parent_tid=[15261]}, 88) = 15261
[pid 15261] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15261] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15260] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15261] <... futex resumed>)        = 0
[pid 15261] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15261] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15261] <... futex resumed>)        = 0
[pid 15261] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15261] <... futex resumed>)        = 0
[pid 15261] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15261] <... futex resumed>)        = 0
[pid 15261] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15260] exit_group(0)               = ?
[pid 15261] <... futex resumed>)        = ?
[pid 15261] +++ exited with 0 +++
[pid 15260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15262 attached
 <unfinished ...>
[pid 15262] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15262] setpgid(0, 0)               = 0
[pid 15262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15262] write(3, "1000", 4)         = 4
[pid 15262] close(3)                    = 0
[pid 15262] write(1, "executing program\n", 18) = 18
executing program
[pid 15262] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15262] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15262] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15263]}, 88) = 15263
[pid 15262] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15263 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15262
[pid 15263] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15263] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15263] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15262] <... futex resumed>)        = 0
[pid 15262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15263] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15262] <... futex resumed>)        = 0
[pid 15262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15263] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15262] <... futex resumed>)        = 0
[pid 15262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15263] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15262] <... futex resumed>)        = 0
[pid 15262] exit_group(0)               = ?
[pid 15263] <... futex resumed>)        = ?
[pid 15263] +++ exited with 0 +++
[pid 15262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15264
./strace-static-x86_64: Process 15264 attached
[pid 15264] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15264] setpgid(0, 0)               = 0
[pid 15264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15264] write(3, "1000", 4)         = 4
[pid 15264] close(3)                    = 0
executing program
[pid 15264] write(1, "executing program\n", 18) = 18
[pid 15264] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15264] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15264] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15265 attached
 => {parent_tid=[15265]}, 88) = 15265
[pid 15265] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15265] <... futex resumed>)        = 0
[pid 15265] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15265] <... futex resumed>)        = 0
[pid 15264] <... futex resumed>)        = 1
[pid 15265] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15265] <... futex resumed>)        = 0
[pid 15264] <... futex resumed>)        = 1
[pid 15265] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15265] <... futex resumed>)        = 0
[pid 15264] <... futex resumed>)        = 1
[pid 15264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15265] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15264] <... futex resumed>)        = 0
[pid 15264] exit_group(0)               = ?
[pid 15265] <... futex resumed>)        = ?
[pid 15265] +++ exited with 0 +++
[pid 15264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15266 attached
, child_tidptr=0x55557060c690) = 15266
[pid 15266] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15266] setpgid(0, 0)               = 0
[pid 15266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15266] write(3, "1000", 4)         = 4
[pid 15266] close(3)                    = 0
[pid 15266] write(1, "executing program\n", 18executing program
) = 18
[pid 15266] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15266] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15266] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15266] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15267]}, 88) = 15267
./strace-static-x86_64: Process 15267 attached
[pid 15266] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15267] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15267] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15267] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15266] <... futex resumed>)        = 0
[pid 15266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15267] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15266] <... futex resumed>)        = 0
[pid 15266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15267] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15266] <... futex resumed>)        = 0
[pid 15266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15267] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15266] <... futex resumed>)        = 0
[pid 15266] exit_group(0)               = ?
[pid 15267] +++ exited with 0 +++
[pid 15266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15268
./strace-static-x86_64: Process 15268 attached
[pid 15268] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15268] setpgid(0, 0)               = 0
[pid 15268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15268] write(3, "1000", 4)         = 4
[pid 15268] close(3)                    = 0
[pid 15268] write(1, "executing program\n", 18) = 18
[pid 15268] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15268] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15268] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15268] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15268] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15268] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15269 attached
 => {parent_tid=[15269]}, 88) = 15269
[pid 15269] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15269] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15268] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15269] <... futex resumed>)        = 0
[pid 15268] <... futex resumed>)        = 1
[pid 15269] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15269] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15269] <... futex resumed>)        = 0
[pid 15268] <... futex resumed>)        = 1
[pid 15269] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15269] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15269] <... futex resumed>)        = 0
[pid 15268] <... futex resumed>)        = 1
[pid 15269] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15269] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15269] <... futex resumed>)        = 0
[pid 15268] <... futex resumed>)        = 1
[pid 15268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15269] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15268] exit_group(0)               = ?
[pid 15269] <... futex resumed>)        = ?
[pid 15269] +++ exited with 0 +++
[pid 15268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15270
./strace-static-x86_64: Process 15270 attached
[pid 15270] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15270] setpgid(0, 0)               = 0
[pid 15270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15270] write(3, "1000", 4)         = 4
[pid 15270] close(3)                    = 0
executing program
[pid 15270] write(1, "executing program\n", 18) = 18
[pid 15270] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15270] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15270] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15270] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15271 attached
 <unfinished ...>
[pid 15271] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15271] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15271] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15270] <... clone3 resumed> => {parent_tid=[15271]}, 88) = 15271
[pid 15270] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15271] <... futex resumed>)        = 0
[pid 15270] <... futex resumed>)        = 1
[pid 15271] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15271] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15271] <... futex resumed>)        = 0
[pid 15270] <... futex resumed>)        = 1
[pid 15271] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15271] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15271] <... futex resumed>)        = 0
[pid 15270] <... futex resumed>)        = 1
[pid 15271] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15271] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15271] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15270] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15271] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15271] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15270] <... futex resumed>)        = 0
[pid 15271] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15270] exit_group(0)               = ?
[pid 15271] <... futex resumed>)        = ?
[pid 15271] +++ exited with 0 +++
[pid 15270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15272
./strace-static-x86_64: Process 15272 attached
[pid 15272] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15272] setpgid(0, 0)               = 0
[pid 15272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15272] write(3, "1000", 4executing program
)         = 4
[pid 15272] close(3)                    = 0
[pid 15272] write(1, "executing program\n", 18) = 18
[pid 15272] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15272] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15272] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15272] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15273 attached
 => {parent_tid=[15273]}, 88) = 15273
[pid 15273] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15273] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15273] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15273] <... futex resumed>)        = 0
[pid 15272] <... futex resumed>)        = 1
[pid 15273] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15273] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15273] <... futex resumed>)        = 0
[pid 15273] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15273] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15273] <... futex resumed>)        = 0
[pid 15272] <... futex resumed>)        = 1
[pid 15273] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15273] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15272] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15273] <... futex resumed>)        = 0
[pid 15273] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15273] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15272] <... futex resumed>)        = 0
[pid 15273] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15272] exit_group(0)               = ?
[pid 15273] <... futex resumed>)        = ?
[pid 15273] +++ exited with 0 +++
[pid 15272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15274 attached
, child_tidptr=0x55557060c690) = 15274
[pid 15274] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15274] setpgid(0, 0)               = 0
[pid 15274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15274] write(3, "1000", 4)         = 4
[pid 15274] close(3)                    = 0
[pid 15274] write(1, "executing program\n", 18) = 18
[pid 15274] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15274] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15274] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15274] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15275 attached
 <unfinished ...>
[pid 15275] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15275] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15275] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15274] <... clone3 resumed> => {parent_tid=[15275]}, 88) = 15275
[pid 15274] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15275] <... futex resumed>)        = 0
[pid 15275] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15275] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15275] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15274] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15275] <... futex resumed>)        = 0
[pid 15275] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15275] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15275] <... futex resumed>)        = 0
[pid 15274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15275] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15275] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15274] <... futex resumed>)        = 0
[pid 15274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15275] <... futex resumed>)        = 0
[pid 15274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15275] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15274] <... futex resumed>)        = 0
[pid 15275] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15274] exit_group(0)               = ?
[pid 15275] <... futex resumed>)        = ?
[pid 15275] +++ exited with 0 +++
[pid 15274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15276
./strace-static-x86_64: Process 15276 attached
[pid 15276] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15276] setpgid(0, 0)               = 0
[pid 15276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15276] write(3, "1000", 4)         = 4
[pid 15276] close(3)                    = 0
executing program
[pid 15276] write(1, "executing program\n", 18) = 18
[pid 15276] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15276] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15276] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15276] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15276] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15276] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15277]}, 88) = 15277
[pid 15276] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15277 attached
 <unfinished ...>
[pid 15277] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15277] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15277] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15276] <... futex resumed>)        = 0
[pid 15276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15277] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15276] <... futex resumed>)        = 0
[pid 15276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15277] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15276] <... futex resumed>)        = 0
[pid 15276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15277] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15276] <... futex resumed>)        = 0
[pid 15276] exit_group(0)               = ?
[pid 15277] +++ exited with 0 +++
[pid 15276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15278 attached
 <unfinished ...>
[pid 15278] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15278] setpgid(0, 0)               = 0
[pid 15278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15278
[pid 15278] write(3, "1000", 4)         = 4
[pid 15278] close(3)                    = 0
[pid 15278] write(1, "executing program\n", 18executing program
) = 18
[pid 15278] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15278] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15278] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15278] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15279]}, 88) = 15279
[pid 15278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15279 attached
 <unfinished ...>
[pid 15279] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15279] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15278] <... futex resumed>)        = 0
[pid 15278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15279] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15278] <... futex resumed>)        = 0
[pid 15278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15279] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15278] <... futex resumed>)        = 0
[pid 15278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15279] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15278] <... futex resumed>)        = 0
[pid 15278] exit_group(0)               = ?
[pid 15279] +++ exited with 0 +++
[pid 15278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15280 attached
 <unfinished ...>
[pid 15280] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15280] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15280
[pid 15280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15280] write(3, "1000", 4)         = 4
[pid 15280] close(3)                    = 0
[pid 15280] write(1, "executing program\n", 18executing program
) = 18
[pid 15280] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15280] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15280] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15280] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15280] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15281]}, 88) = 15281
[pid 15280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15281 attached
 <unfinished ...>
[pid 15281] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15281] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15281] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15280] <... futex resumed>)        = 0
[pid 15280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15281] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15280] <... futex resumed>)        = 0
[pid 15280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15281] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15280] <... futex resumed>)        = 0
[pid 15280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15281] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15280] <... futex resumed>)        = 0
[pid 15280] exit_group(0)               = ?
[pid 15281] +++ exited with 0 +++
[pid 15280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15282 attached
 <unfinished ...>
[pid 15282] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15282] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15282
[pid 15282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15282] write(3, "1000", 4)         = 4
[pid 15282] close(3)                    = 0
[pid 15282] write(1, "executing program\n", 18executing program
) = 18
[pid 15282] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15282] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15282] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15283 attached
 => {parent_tid=[15283]}, 88) = 15283
[pid 15283] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15283] <... futex resumed>)        = 0
[pid 15282] <... futex resumed>)        = 1
[pid 15283] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15283] <... futex resumed>)        = 0
[pid 15283] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15283] <... futex resumed>)        = 0
[pid 15282] <... futex resumed>)        = 1
[pid 15283] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15283] <... futex resumed>)        = 0
[pid 15283] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15282] exit_group(0)               = ?
[pid 15283] <... futex resumed>)        = ?
[pid 15283] +++ exited with 0 +++
[pid 15282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15284
./strace-static-x86_64: Process 15284 attached
[pid 15284] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15284] setpgid(0, 0)               = 0
[pid 15284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15284] write(3, "1000", 4)         = 4
[pid 15284] close(3)                    = 0
executing program
[pid 15284] write(1, "executing program\n", 18) = 18
[pid 15284] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15284] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15284] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15284] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15285 attached
 <unfinished ...>
[pid 15285] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15284] <... clone3 resumed> => {parent_tid=[15285]}, 88) = 15285
[pid 15284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15285] <... futex resumed>)        = 0
[pid 15284] <... futex resumed>)        = 1
[pid 15285] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15285] <... futex resumed>)        = 0
[pid 15284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15285] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15284] <... futex resumed>)        = 0
[pid 15285] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15285] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15284] <... futex resumed>)        = 0
[pid 15285] <... futex resumed>)        = 0
[pid 15284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15285] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15285] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15284] <... futex resumed>)        = 0
[pid 15285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15284] exit_group(0)               = ?
[pid 15285] <... futex resumed>)        = ?
[pid 15285] +++ exited with 0 +++
[pid 15284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15286
./strace-static-x86_64: Process 15286 attached
[pid 15286] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15286] setpgid(0, 0)               = 0
[pid 15286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15286] write(3, "1000", 4)         = 4
[pid 15286] close(3executing program
)                    = 0
[pid 15286] write(1, "executing program\n", 18) = 18
[pid 15286] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15286] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15286] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15287 attached
 => {parent_tid=[15287]}, 88) = 15287
[pid 15287] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15287] <... futex resumed>)        = 0
[pid 15286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15287] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15287] <... futex resumed>)        = 0
[pid 15286] <... futex resumed>)        = 1
[pid 15287] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15287] <... futex resumed>)        = 0
[pid 15286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15287] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15287] <... futex resumed>)        = 0
[pid 15286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15287] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15286] <... futex resumed>)        = 0
[pid 15287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15286] exit_group(0)               = ?
[pid 15287] <... futex resumed>)        = ?
[pid 15287] +++ exited with 0 +++
[pid 15286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15288
./strace-static-x86_64: Process 15288 attached
[pid 15288] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15288] setpgid(0, 0)               = 0
[pid 15288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15288] write(3, "1000", 4)         = 4
[pid 15288] close(3)                    = 0
executing program
[pid 15288] write(1, "executing program\n", 18) = 18
[pid 15288] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15288] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15288] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15288] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15289 attached
 <unfinished ...>
[pid 15289] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15288] <... clone3 resumed> => {parent_tid=[15289]}, 88) = 15289
[pid 15288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15289] <... futex resumed>)        = 0
[pid 15288] <... futex resumed>)        = 1
[pid 15289] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15289] <... futex resumed>)        = 0
[pid 15288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15289] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15288] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15289] <... futex resumed>)        = 0
[pid 15289] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15288] <... futex resumed>)        = 0
[pid 15288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15289] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15288] <... futex resumed>)        = 0
[pid 15289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15288] exit_group(0)               = ?
[pid 15289] <... futex resumed>)        = ?
[pid 15289] +++ exited with 0 +++
[pid 15288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15290
./strace-static-x86_64: Process 15290 attached
[pid 15290] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15290] setpgid(0, 0)               = 0
[pid 15290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15290] write(3, "1000", 4)         = 4
[pid 15290] close(3executing program
)                    = 0
[pid 15290] write(1, "executing program\n", 18) = 18
[pid 15290] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15290] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15290] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15290] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15291 attached
 => {parent_tid=[15291]}, 88) = 15291
[pid 15291] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15291] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15291] <... futex resumed>)        = 0
[pid 15291] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15291] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15291] <... futex resumed>)        = 0
[pid 15291] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15291] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15291] <... futex resumed>)        = 0
[pid 15291] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15291] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15291] <... futex resumed>)        = 0
[pid 15291] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15291] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15290] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15291] <... futex resumed>)        = 0
[pid 15290] exit_group(0)               = ?
[pid 15291] +++ exited with 0 +++
[pid 15290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15292 attached
, child_tidptr=0x55557060c690) = 15292
[pid 15292] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15292] setpgid(0, 0)               = 0
[pid 15292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15292] write(3, "1000", 4)         = 4
[pid 15292] close(3)                    = 0
[pid 15292] write(1, "executing program\n", 18executing program
) = 18
[pid 15292] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15292] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15292] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15293]}, 88) = 15293
[pid 15292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15293 attached
 <unfinished ...>
[pid 15293] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15293] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15292] <... futex resumed>)        = 0
[pid 15292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15293] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15292] <... futex resumed>)        = 0
[pid 15292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15293] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15292] <... futex resumed>)        = 0
[pid 15292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15293] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15292] <... futex resumed>)        = 0
[pid 15292] exit_group(0)               = ?
[pid 15293] +++ exited with 0 +++
[pid 15292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15294
./strace-static-x86_64: Process 15294 attached
[pid 15294] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15294] setpgid(0, 0)               = 0
[pid 15294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15294] write(3, "1000", 4)         = 4
[pid 15294] close(3)                    = 0
[pid 15294] write(1, "executing program\n", 18executing program
) = 18
[pid 15294] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15294] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15294] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15295 attached
 => {parent_tid=[15295]}, 88) = 15295
[pid 15295] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15295] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15295] <... futex resumed>)        = 0
[pid 15295] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15295] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15295] <... futex resumed>)        = 0
[pid 15295] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15295] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15295] <... futex resumed>)        = 0
[pid 15295] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15295] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15295] <... futex resumed>)        = 0
[pid 15295] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15295] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15294] exit_group(0)               = ?
[pid 15295] <... futex resumed>)        = ?
[pid 15295] +++ exited with 0 +++
[pid 15294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15296
./strace-static-x86_64: Process 15296 attached
[pid 15296] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15296] setpgid(0, 0)               = 0
[pid 15296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15296] write(3, "1000", 4)         = 4
executing program
[pid 15296] close(3)                    = 0
[pid 15296] write(1, "executing program\n", 18) = 18
[pid 15296] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15296] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15296] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15297]}, 88) = 15297
[pid 15296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15297 attached
 <unfinished ...>
[pid 15297] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15297] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15296] <... futex resumed>)        = 0
[pid 15296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15297] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15296] <... futex resumed>)        = 0
[pid 15296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15297] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15296] <... futex resumed>)        = 0
[pid 15296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15297] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15296] <... futex resumed>)        = 0
[pid 15296] exit_group(0)               = ?
[pid 15297] +++ exited with 0 +++
[pid 15296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15298 attached
 <unfinished ...>
[pid 15298] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15298] setpgid(0, 0)               = 0
[pid 15298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15298] write(3, "1000", 4)         = 4
[pid 15298] close(3executing program
)                    = 0
[pid 15298] write(1, "executing program\n", 18) = 18
[pid 15298] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15298] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15298] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15298
[pid 15298] <... clone3 resumed> => {parent_tid=[15299]}, 88) = 15299
./strace-static-x86_64: Process 15299 attached
[pid 15298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15299] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15299] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15298] <... futex resumed>)        = 0
[pid 15298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15299] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15298] <... futex resumed>)        = 0
[pid 15298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15299] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15298] <... futex resumed>)        = 0
[pid 15298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15299] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15298] <... futex resumed>)        = 0
[pid 15298] exit_group(0)               = ?
[pid 15299] +++ exited with 0 +++
[pid 15298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15300 attached
 <unfinished ...>
[pid 15300] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15300] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15300
[pid 15300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15300] write(3, "1000", 4)         = 4
[pid 15300] close(3executing program
)                    = 0
[pid 15300] write(1, "executing program\n", 18) = 18
[pid 15300] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15300] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15300] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15300] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15300] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15300] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15301]}, 88) = 15301
[pid 15300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15301 attached
 <unfinished ...>
[pid 15301] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15301] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15300] <... futex resumed>)        = 0
[pid 15300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15301] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15300] <... futex resumed>)        = 0
[pid 15300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15301] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15300] <... futex resumed>)        = 0
[pid 15300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15301] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15300] <... futex resumed>)        = 0
[pid 15300] exit_group(0)               = ?
[pid 15301] +++ exited with 0 +++
[pid 15300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15302 attached
 <unfinished ...>
[pid 15302] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15302] setpgid(0, 0)               = 0
[pid 15302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15302
[pid 15302] <... openat resumed>)       = 3
[pid 15302] write(3, "1000", 4)         = 4
[pid 15302] close(3)                    = 0
[pid 15302] write(1, "executing program\n", 18executing program
) = 18
[pid 15302] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15302] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15302] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15303 attached
 => {parent_tid=[15303]}, 88) = 15303
[pid 15303] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15303] <... futex resumed>)        = 0
[pid 15303] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15303] <... futex resumed>)        = 0
[pid 15303] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15303] <... futex resumed>)        = 0
[pid 15303] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15303] <... futex resumed>)        = 0
[pid 15302] <... futex resumed>)        = 1
[pid 15303] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15302] exit_group(0)               = ?
[pid 15303] <... futex resumed>)        = ?
[pid 15303] +++ exited with 0 +++
[pid 15302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15304
./strace-static-x86_64: Process 15304 attached
[pid 15304] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15304] setpgid(0, 0)               = 0
[pid 15304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15304] write(3, "1000", 4)         = 4
[pid 15304] close(3executing program
)                    = 0
[pid 15304] write(1, "executing program\n", 18) = 18
[pid 15304] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15304] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15304] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15305 attached
 <unfinished ...>
[pid 15305] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15304] <... clone3 resumed> => {parent_tid=[15305]}, 88) = 15305
[pid 15304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15305] <... futex resumed>)        = 0
[pid 15304] <... futex resumed>)        = 1
[pid 15305] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15305] <... futex resumed>)        = 0
[pid 15304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15305] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15304] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15305] <... futex resumed>)        = 0
[pid 15304] <... futex resumed>)        = 1
[pid 15305] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15305] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15304] <... futex resumed>)        = 0
[pid 15304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15305] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15304] <... futex resumed>)        = 0
[pid 15305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15304] exit_group(0)               = ?
[pid 15305] <... futex resumed>)        = ?
[pid 15305] +++ exited with 0 +++
[pid 15304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15306
./strace-static-x86_64: Process 15306 attached
[pid 15306] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15306] setpgid(0, 0)               = 0
[pid 15306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15306] write(3, "1000", 4)         = 4
[pid 15306] close(3)                    = 0
executing program
[pid 15306] write(1, "executing program\n", 18) = 18
[pid 15306] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15306] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15306] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15306] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15306] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15306] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15307]}, 88) = 15307
[pid 15306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15307 attached
 <unfinished ...>
[pid 15307] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15307] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15306] <... futex resumed>)        = 0
[pid 15306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15307] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15306] <... futex resumed>)        = 0
[pid 15306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15307] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15306] <... futex resumed>)        = 0
[pid 15306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15307] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15306] <... futex resumed>)        = 0
[pid 15306] exit_group(0)               = ?
[pid 15307] +++ exited with 0 +++
[pid 15306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15308
./strace-static-x86_64: Process 15308 attached
[pid 15308] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15308] setpgid(0, 0)               = 0
[pid 15308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15308] write(3, "1000", 4)         = 4
[pid 15308] close(3executing program
)                    = 0
[pid 15308] write(1, "executing program\n", 18) = 18
[pid 15308] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15308] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15308] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15309]}, 88) = 15309
[pid 15308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15309 attached
 <unfinished ...>
[pid 15309] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15309] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15308] <... futex resumed>)        = 0
[pid 15308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15309] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15308] <... futex resumed>)        = 0
[pid 15308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15309] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15308] <... futex resumed>)        = 0
[pid 15308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15309] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15308] <... futex resumed>)        = 0
[pid 15308] exit_group(0)               = ?
[pid 15309] +++ exited with 0 +++
[pid 15308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15310 attached
 <unfinished ...>
[pid 15310] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15310] setpgid(0, 0)               = 0
[pid 15310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15310] write(3, "1000", 4)         = 4
[pid 15310] close(3executing program
)                    = 0
[pid 15310] write(1, "executing program\n", 18) = 18
[pid 15310] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15310] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15310] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15310
[pid 15310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15311]}, 88) = 15311
[pid 15310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15311 attached
 <unfinished ...>
[pid 15311] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15311] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15310] <... futex resumed>)        = 0
[pid 15310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15311] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15310] <... futex resumed>)        = 0
[pid 15310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15311] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15310] <... futex resumed>)        = 0
[pid 15310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15311] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15310] <... futex resumed>)        = 0
[pid 15310] exit_group(0)               = ?
[pid 15311] +++ exited with 0 +++
[pid 15310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15312
./strace-static-x86_64: Process 15312 attached
[pid 15312] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15312] setpgid(0, 0)               = 0
[pid 15312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15312] write(3, "1000", 4)         = 4
[pid 15312] close(3)                    = 0
[pid 15312] write(1, "executing program\n", 18executing program
) = 18
[pid 15312] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15312] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15312] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15313 attached
 => {parent_tid=[15313]}, 88) = 15313
[pid 15313] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15313] <... futex resumed>)        = 0
[pid 15313] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15313] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15312] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15313] <... futex resumed>)        = 0
[pid 15313] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15313] <... futex resumed>)        = 0
[pid 15313] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15313] <... futex resumed>)        = 0
[pid 15313] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15312] exit_group(0)               = ?
[pid 15313] <... futex resumed>)        = ?
[pid 15313] +++ exited with 0 +++
[pid 15312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15314
./strace-static-x86_64: Process 15314 attached
[pid 15314] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15314] setpgid(0, 0)               = 0
[pid 15314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15314] write(3, "1000", 4)         = 4
[pid 15314] close(3)                    = 0
[pid 15314] write(1, "executing program\n", 18executing program
) = 18
[pid 15314] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15314] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15314] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15315]}, 88) = 15315
[pid 15314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15315 attached
 <unfinished ...>
[pid 15315] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15315] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15314] <... futex resumed>)        = 0
[pid 15314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15315] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15314] <... futex resumed>)        = 0
[pid 15314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15315] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15314] <... futex resumed>)        = 0
[pid 15314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15315] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15314] <... futex resumed>)        = 0
[pid 15314] exit_group(0 <unfinished ...>
[pid 15315] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15314] <... exit_group resumed>)   = ?
[pid 15315] <... futex resumed>)        = ?
[pid 15315] +++ exited with 0 +++
[pid 15314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15316
./strace-static-x86_64: Process 15316 attached
[pid 15316] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15316] setpgid(0, 0)               = 0
[pid 15316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15316] write(3, "1000", 4)         = 4
[pid 15316] close(3)                    = 0
[pid 15316] write(1, "executing program\n", 18executing program
) = 18
[pid 15316] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15316] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15316] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15317 attached
 <unfinished ...>
[pid 15317] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15316] <... clone3 resumed> => {parent_tid=[15317]}, 88) = 15317
[pid 15317] <... set_robust_list resumed>) = 0
[pid 15316] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15317] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15316] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15317] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15317] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15317] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15316] <... futex resumed>)        = 0
[pid 15316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15317] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15316] <... futex resumed>)        = 0
[pid 15316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15317] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15316] <... futex resumed>)        = 0
[pid 15316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15317] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15316] <... futex resumed>)        = 0
[pid 15316] exit_group(0)               = ?
[pid 15317] +++ exited with 0 +++
[pid 15316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15318 attached
 <unfinished ...>
[pid 15318] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15318] setpgid(0, 0)               = 0
[pid 15318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15318] write(3, "1000", 4)         = 4
[pid 15318] close(3)                    = 0
[pid 15318] write(1, "executing program\n", 18) = 18
executing program
[pid 15318] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15318] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15318] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15319]}, 88) = 15319
[pid 15318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15319 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15318
[pid 15319] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15319] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15318] <... futex resumed>)        = 0
[pid 15318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15319] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15318] <... futex resumed>)        = 0
[pid 15318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15319] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15318] <... futex resumed>)        = 0
[pid 15318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15319] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15318] <... futex resumed>)        = 0
[pid 15318] exit_group(0)               = ?
[pid 15319] +++ exited with 0 +++
[pid 15318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15320 attached
, child_tidptr=0x55557060c690) = 15320
[pid 15320] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15320] setpgid(0, 0)               = 0
[pid 15320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15320] write(3, "1000", 4)         = 4
[pid 15320] close(3)                    = 0
[pid 15320] write(1, "executing program\n", 18executing program
) = 18
[pid 15320] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15320] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15320] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15320] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15321 attached
 => {parent_tid=[15321]}, 88) = 15321
[pid 15321] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15321] <... futex resumed>)        = 0
[pid 15321] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15321] <... futex resumed>)        = 0
[pid 15321] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15321] <... futex resumed>)        = 0
[pid 15321] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15321] <... futex resumed>)        = 0
[pid 15320] <... futex resumed>)        = 1
[pid 15321] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15321] <... futex resumed>)        = 0
[pid 15321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15320] exit_group(0)               = ?
[pid 15321] <... futex resumed>)        = ?
[pid 15321] +++ exited with 0 +++
[pid 15320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15322
./strace-static-x86_64: Process 15322 attached
[pid 15322] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15322] setpgid(0, 0)               = 0
[pid 15322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15322] write(3, "1000", 4)         = 4
[pid 15322] close(3executing program
)                    = 0
[pid 15322] write(1, "executing program\n", 18) = 18
[pid 15322] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15322] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15322] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15323]}, 88) = 15323
[pid 15322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15323 attached
 <unfinished ...>
[pid 15323] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15323] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15323] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15322] <... futex resumed>)        = 0
[pid 15322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15323] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15322] <... futex resumed>)        = 0
[pid 15322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15323] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15323] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15322] <... futex resumed>)        = 0
[pid 15322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15323] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15322] <... futex resumed>)        = 0
[pid 15322] exit_group(0)               = ?
[pid 15323] +++ exited with 0 +++
[pid 15322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15324
./strace-static-x86_64: Process 15324 attached
[pid 15324] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15324] setpgid(0, 0)               = 0
[pid 15324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15324] write(3, "1000", 4)         = 4
[pid 15324] close(3)                    = 0
[pid 15324] write(1, "executing program\n", 18executing program
) = 18
[pid 15324] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15324] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15324] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15325 attached
 => {parent_tid=[15325]}, 88) = 15325
[pid 15325] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15325] <... futex resumed>)        = 0
[pid 15325] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15325] <... futex resumed>)        = 0
[pid 15325] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15324] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15325] <... futex resumed>)        = 0
[pid 15325] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15325] <... futex resumed>)        = 0
[pid 15325] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15325] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15324] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15324] exit_group(0)               = ?
[pid 15325] <... futex resumed>)        = ?
[pid 15325] +++ exited with 0 +++
[pid 15324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15326
./strace-static-x86_64: Process 15326 attached
[pid 15326] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15326] setpgid(0, 0)               = 0
[pid 15326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15326] write(3, "1000", 4)         = 4
[pid 15326] close(3)                    = 0
[pid 15326] write(1, "executing program\n", 18executing program
) = 18
[pid 15326] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15326] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15326] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15326] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15327 attached
 => {parent_tid=[15327]}, 88) = 15327
[pid 15327] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15327] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15327] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15327] <... futex resumed>)        = 0
[pid 15326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15327] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15327] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15327] <... futex resumed>)        = 0
[pid 15326] <... futex resumed>)        = 1
[pid 15327] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15327] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15327] <... futex resumed>)        = 0
[pid 15327] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15327] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15327] <... futex resumed>)        = 0
[pid 15326] <... futex resumed>)        = 1
[pid 15327] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15327] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15326] exit_group(0)               = ?
[pid 15327] <... futex resumed>)        = ?
[pid 15327] +++ exited with 0 +++
[pid 15326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15328 attached
, child_tidptr=0x55557060c690) = 15328
[pid 15328] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15328] setpgid(0, 0)               = 0
[pid 15328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15328] write(3, "1000", 4)         = 4
[pid 15328] close(3)                    = 0
[pid 15328] write(1, "executing program\n", 18executing program
) = 18
[pid 15328] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15328] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15328] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15329 attached
 => {parent_tid=[15329]}, 88) = 15329
[pid 15329] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15329] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15329] <... futex resumed>)        = 0
[pid 15328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15329] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15329] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15328] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15329] <... futex resumed>)        = 0
[pid 15329] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15329] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15329] <... futex resumed>)        = 0
[pid 15328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15329] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15329] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15328] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15329] <... futex resumed>)        = 0
[pid 15329] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15329] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15329] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15328] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15328] exit_group(0)               = ?
[pid 15329] <... futex resumed>)        = ?
[pid 15329] +++ exited with 0 +++
[pid 15328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15330
./strace-static-x86_64: Process 15330 attached
[pid 15330] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15330] setpgid(0, 0)               = 0
[pid 15330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15330] write(3, "1000", 4)         = 4
[pid 15330] close(3)                    = 0
executing program
[pid 15330] write(1, "executing program\n", 18) = 18
[pid 15330] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15330] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15330] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15330] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15330] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15330] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15331 attached
 <unfinished ...>
[pid 15331] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15331] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15330] <... clone3 resumed> => {parent_tid=[15331]}, 88) = 15331
[pid 15330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15331] <... futex resumed>)        = 0
[pid 15331] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15331] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15331] <... futex resumed>)        = 0
[pid 15330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15331] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15331] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15330] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15331] <... futex resumed>)        = 0
[pid 15331] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15331] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15331] <... futex resumed>)        = 0
[pid 15330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15331] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15330] <... futex resumed>)        = 0
[pid 15331] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15330] exit_group(0)               = ?
[pid 15331] <... futex resumed>)        = ?
[pid 15331] +++ exited with 0 +++
[pid 15330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15332
./strace-static-x86_64: Process 15332 attached
[pid 15332] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15332] setpgid(0, 0)               = 0
[pid 15332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15332] write(3, "1000", 4)         = 4
[pid 15332] close(3)                    = 0
[pid 15332] write(1, "executing program\n", 18executing program
) = 18
[pid 15332] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15332] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15332] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15333 attached
 <unfinished ...>
[pid 15333] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15333] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15332] <... clone3 resumed> => {parent_tid=[15333]}, 88) = 15333
[pid 15332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15333] <... futex resumed>)        = 0
[pid 15333] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15333] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15333] <... futex resumed>)        = 0
[pid 15332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15333] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15333] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15332] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15333] <... futex resumed>)        = 0
[pid 15333] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15333] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15333] <... futex resumed>)        = 0
[pid 15333] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15333] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15332] exit_group(0)               = ?
[pid 15333] <... futex resumed>)        = ?
[pid 15333] +++ exited with 0 +++
[pid 15332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15334
./strace-static-x86_64: Process 15334 attached
[pid 15334] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15334] setpgid(0, 0)               = 0
[pid 15334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15334] write(3, "1000", 4)         = 4
[pid 15334] close(3)                    = 0
executing program
[pid 15334] write(1, "executing program\n", 18) = 18
[pid 15334] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15334] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15334] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15335 attached
 => {parent_tid=[15335]}, 88) = 15335
[pid 15335] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15335] <... futex resumed>)        = 0
[pid 15334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15335] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15334] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15335] <... futex resumed>)        = 0
[pid 15334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15335] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15334] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15335] <... futex resumed>)        = 0
[pid 15335] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15334] <... futex resumed>)        = 1
[pid 15335] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15335] <... futex resumed>)        = 0
[pid 15335] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15335] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15334] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15334] exit_group(0)               = ?
[pid 15335] <... futex resumed>)        = ?
[pid 15335] +++ exited with 0 +++
[pid 15334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15336
./strace-static-x86_64: Process 15336 attached
[pid 15336] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15336] setpgid(0, 0)               = 0
[pid 15336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15336] write(3, "1000", 4)         = 4
[pid 15336] close(3)                    = 0
[pid 15336] write(1, "executing program\n", 18executing program
) = 18
[pid 15336] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15336] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15336] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15336] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15337 attached
 <unfinished ...>
[pid 15337] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15336] <... clone3 resumed> => {parent_tid=[15337]}, 88) = 15337
[pid 15336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15337] <... futex resumed>)        = 0
[pid 15337] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15337] <... futex resumed>)        = 0
[pid 15337] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15337] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15336] <... futex resumed>)        = 0
[pid 15337] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15337] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15336] <... futex resumed>)        = 0
[pid 15337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15337] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15336] <... futex resumed>)        = 0
[pid 15336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15337] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15336] <... futex resumed>)        = 0
[pid 15337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15336] exit_group(0)               = ?
[pid 15337] <... futex resumed>)        = ?
[pid 15337] +++ exited with 0 +++
[pid 15336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15338
./strace-static-x86_64: Process 15338 attached
[pid 15338] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15338] setpgid(0, 0)               = 0
[pid 15338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15338] write(3, "1000", 4)         = 4
[pid 15338] close(3executing program
)                    = 0
[pid 15338] write(1, "executing program\n", 18) = 18
[pid 15338] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15338] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15338] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15338] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15339 attached
 <unfinished ...>
[pid 15339] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15339] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15338] <... clone3 resumed> => {parent_tid=[15339]}, 88) = 15339
[pid 15338] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15339] <... futex resumed>)        = 0
[pid 15339] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15339] <... futex resumed>)        = 0
[pid 15338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15339] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15339] <... futex resumed>)        = 0
[pid 15338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15339] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15338] <... futex resumed>)        = 0
[pid 15338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15339] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15338] <... futex resumed>)        = 0
[pid 15339] <... futex resumed>)        = 0
[pid 15338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15338] exit_group(0)               = ?
[pid 15339] <... futex resumed>)        = ?
[pid 15339] +++ exited with 0 +++
[pid 15338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15340
./strace-static-x86_64: Process 15340 attached
[pid 15340] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15340] setpgid(0, 0)               = 0
[pid 15340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15340] write(3, "1000", 4)         = 4
[pid 15340] close(3)                    = 0
[pid 15340] write(1, "executing program\n", 18executing program
) = 18
[pid 15340] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15340] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15340] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15341 attached
 => {parent_tid=[15341]}, 88) = 15341
[pid 15341] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15341] <... futex resumed>)        = 0
[pid 15341] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15341] <... futex resumed>)        = 0
[pid 15341] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15341] <... futex resumed>)        = 0
[pid 15340] <... futex resumed>)        = 1
[pid 15341] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15341] <... futex resumed>)        = 0
[pid 15341] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15341] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15340] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15340] exit_group(0)               = ?
[pid 15341] <... futex resumed>)        = ?
[pid 15341] +++ exited with 0 +++
[pid 15340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15342 attached
, child_tidptr=0x55557060c690) = 15342
[pid 15342] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15342] setpgid(0, 0)               = 0
[pid 15342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15342] write(3, "1000", 4)         = 4
[pid 15342] close(3)                    = 0
[pid 15342] write(1, "executing program\n", 18executing program
) = 18
[pid 15342] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15342] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15342] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15342] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15342] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15342] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15343]}, 88) = 15343
[pid 15342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15343 attached
 <unfinished ...>
[pid 15343] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15343] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15342] <... futex resumed>)        = 0
[pid 15342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15343] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15342] <... futex resumed>)        = 0
[pid 15342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15343] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15343] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15342] <... futex resumed>)        = 0
[pid 15342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15343] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15342] <... futex resumed>)        = 0
[pid 15342] exit_group(0)               = ?
[pid 15343] +++ exited with 0 +++
[pid 15342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15344 attached
 <unfinished ...>
[pid 15344] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15344] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15344
[pid 15344] <... prctl resumed>)        = 0
[pid 15344] setpgid(0, 0)               = 0
[pid 15344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15344] write(3, "1000", 4)         = 4
[pid 15344] close(3)                    = 0
[pid 15344] write(1, "executing program\n", 18executing program
) = 18
[pid 15344] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15344] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15344] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15345 attached
 => {parent_tid=[15345]}, 88) = 15345
[pid 15345] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15345] <... futex resumed>)        = 0
[pid 15345] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15345] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15344] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15345] <... futex resumed>)        = 0
[pid 15345] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15345] <... futex resumed>)        = 0
[pid 15345] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15345] <... futex resumed>)        = 0
[pid 15344] <... futex resumed>)        = 1
[pid 15345] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15345] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15344] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15344] exit_group(0)               = ?
[pid 15345] <... futex resumed>)        = ?
[pid 15345] +++ exited with 0 +++
[pid 15344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15346
./strace-static-x86_64: Process 15346 attached
[pid 15346] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15346] setpgid(0, 0)               = 0
[pid 15346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15346] write(3, "1000", 4)         = 4
[pid 15346] close(3)                    = 0
[pid 15346] write(1, "executing program\n", 18executing program
) = 18
[pid 15346] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15346] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15346] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15347 attached
 <unfinished ...>
[pid 15347] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15346] <... clone3 resumed> => {parent_tid=[15347]}, 88) = 15347
[pid 15346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15347] <... futex resumed>)        = 0
[pid 15346] <... futex resumed>)        = 1
[pid 15347] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15347] <... futex resumed>)        = 0
[pid 15346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15347] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15346] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15347] <... futex resumed>)        = 0
[pid 15346] <... futex resumed>)        = 1
[pid 15347] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15347] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15346] <... futex resumed>)        = 0
[pid 15347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15347] <... futex resumed>)        = 0
[pid 15346] <... futex resumed>)        = 1
[pid 15346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15347] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15346] <... futex resumed>)        = 0
[pid 15347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15346] exit_group(0)               = ?
[pid 15347] <... futex resumed>)        = ?
[pid 15347] +++ exited with 0 +++
[pid 15346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15348
./strace-static-x86_64: Process 15348 attached
[pid 15348] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15348] setpgid(0, 0)               = 0
[pid 15348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15348] write(3, "1000", 4)         = 4
[pid 15348] close(3)                    = 0
[pid 15348] write(1, "executing program\n", 18executing program
) = 18
[pid 15348] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15348] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15348] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15348] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15349 attached
 <unfinished ...>
[pid 15349] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15348] <... clone3 resumed> => {parent_tid=[15349]}, 88) = 15349
[pid 15348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15349] <... futex resumed>)        = 0
[pid 15349] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15349] <... futex resumed>)        = 0
[pid 15348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15349] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15349] <... futex resumed>)        = 0
[pid 15348] <... futex resumed>)        = 1
[pid 15349] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15349] <... futex resumed>)        = 0
[pid 15348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15349] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15348] exit_group(0)               = ?
[pid 15349] <... futex resumed>)        = ?
[pid 15349] +++ exited with 0 +++
[pid 15348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15350
./strace-static-x86_64: Process 15350 attached
[pid 15350] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15350] setpgid(0, 0)               = 0
[pid 15350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15350] write(3, "1000", 4)         = 4
[pid 15350] close(3)                    = 0
executing program
[pid 15350] write(1, "executing program\n", 18) = 18
[pid 15350] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15350] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15350] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15351]}, 88) = 15351
[pid 15350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15351 attached
 <unfinished ...>
[pid 15351] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15351] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15350] <... futex resumed>)        = 0
[pid 15350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15351] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15350] <... futex resumed>)        = 0
[pid 15350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15351] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15350] <... futex resumed>)        = 0
[pid 15350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15351] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15350] <... futex resumed>)        = 0
[pid 15350] exit_group(0)               = ?
[pid 15351] <... futex resumed>)        = ?
[pid 15351] +++ exited with 0 +++
[pid 15350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15352
./strace-static-x86_64: Process 15352 attached
[pid 15352] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15352] setpgid(0, 0)               = 0
[pid 15352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15352] write(3, "1000", 4)         = 4
[pid 15352] close(3)                    = 0
[pid 15352] write(1, "executing program\n", 18executing program
) = 18
[pid 15352] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15352] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15352] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15353]}, 88) = 15353
[pid 15352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 15353 attached
[pid 15352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15353] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15353] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15352] <... futex resumed>)        = 0
[pid 15352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15353] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15352] <... futex resumed>)        = 0
[pid 15352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15353] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15352] <... futex resumed>)        = 0
[pid 15352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15353] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15352] <... futex resumed>)        = 0
[pid 15352] exit_group(0)               = ?
[pid 15353] +++ exited with 0 +++
[pid 15352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15354 attached
 <unfinished ...>
[pid 15354] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15354
[pid 15354] setpgid(0, 0)               = 0
[pid 15354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15354] write(3, "1000", 4)         = 4
[pid 15354] close(3)                    = 0
[pid 15354] write(1, "executing program\n", 18executing program
) = 18
[pid 15354] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15354] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15354] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15355]}, 88) = 15355
[pid 15354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 15355 attached
[pid 15355] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15355] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15355] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15355] <... futex resumed>)        = 0
[pid 15354] <... futex resumed>)        = 1
[pid 15355] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15355] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15355] <... futex resumed>)        = 0
[pid 15355] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15355] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15355] <... futex resumed>)        = 0
[pid 15354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15355] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15355] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15354] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15354] exit_group(0)               = ?
[pid 15355] <... futex resumed>)        = ?
[pid 15355] +++ exited with 0 +++
[pid 15354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15356 attached
, child_tidptr=0x55557060c690) = 15356
[pid 15356] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15356] setpgid(0, 0)               = 0
[pid 15356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15356] write(3, "1000", 4)         = 4
[pid 15356] close(3)                    = 0
[pid 15356] write(1, "executing program\n", 18executing program
) = 18
[pid 15356] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15356] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15356] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15356] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15357]}, 88) = 15357
[pid 15356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15357 attached
 <unfinished ...>
[pid 15357] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15357] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15356] <... futex resumed>)        = 0
[pid 15356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15357] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15356] <... futex resumed>)        = 0
[pid 15356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15357] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15356] <... futex resumed>)        = 0
[pid 15356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15357] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15356] <... futex resumed>)        = 0
[pid 15356] exit_group(0 <unfinished ...>
[pid 15357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15356] <... exit_group resumed>)   = ?
[pid 15357] <... futex resumed>)        = ?
[pid 15357] +++ exited with 0 +++
[pid 15356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15356, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15358 attached
, child_tidptr=0x55557060c690) = 15358
[pid 15358] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15358] setpgid(0, 0)               = 0
[pid 15358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15358] write(3, "1000", 4)         = 4
[pid 15358] close(3)                    = 0
[pid 15358] write(1, "executing program\n", 18executing program
) = 18
[pid 15358] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15358] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15358] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15358] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15358] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15358] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15359 attached
 => {parent_tid=[15359]}, 88) = 15359
[pid 15359] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15359] <... futex resumed>)        = 0
[pid 15359] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15359] <... futex resumed>)        = 0
[pid 15359] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15359] <... futex resumed>)        = 0
[pid 15359] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15359] <... futex resumed>)        = 0
[pid 15358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15359] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15358] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15358] exit_group(0)               = ?
[pid 15359] <... futex resumed>)        = ?
[pid 15359] +++ exited with 0 +++
[pid 15358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15360
./strace-static-x86_64: Process 15360 attached
[pid 15360] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15360] setpgid(0, 0)               = 0
[pid 15360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15360] write(3, "1000", 4)         = 4
[pid 15360] close(3)                    = 0
[pid 15360] write(1, "executing program\n", 18executing program
) = 18
[pid 15360] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15360] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15360] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15360] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15360] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15360] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15361]}, 88) = 15361
[pid 15360] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15361 attached
 <unfinished ...>
[pid 15361] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15361] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15360] <... futex resumed>)        = 0
[pid 15360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15361] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15360] <... futex resumed>)        = 0
[pid 15360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15361] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15360] <... futex resumed>)        = 0
[pid 15360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15361] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15360] <... futex resumed>)        = 0
[pid 15360] exit_group(0)               = ?
[pid 15361] +++ exited with 0 +++
[pid 15360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15362 attached
 <unfinished ...>
[pid 15362] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15362
[pid 15362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15362] setpgid(0, 0)               = 0
[pid 15362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15362] write(3, "1000", 4)         = 4
[pid 15362] close(3)                    = 0
[pid 15362] write(1, "executing program\n", 18executing program
) = 18
[pid 15362] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15362] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15362] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15362] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15362] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15363]}, 88) = 15363
[pid 15362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15363 attached
 <unfinished ...>
[pid 15363] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15363] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15363] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15362] <... futex resumed>)        = 0
[pid 15362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15363] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15362] <... futex resumed>)        = 0
[pid 15362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15363] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15362] <... futex resumed>)        = 0
[pid 15362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15363] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15362] <... futex resumed>)        = 0
[pid 15362] exit_group(0)               = ?
[pid 15363] +++ exited with 0 +++
[pid 15362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15364 attached
, child_tidptr=0x55557060c690) = 15364
[pid 15364] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15364] setpgid(0, 0)               = 0
[pid 15364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15364] write(3, "1000", 4)         = 4
[pid 15364] close(3)                    = 0
[pid 15364] write(1, "executing program\n", 18executing program
) = 18
[pid 15364] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15364] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15364] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15364] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15365]}, 88) = 15365
[pid 15364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15365 attached
 <unfinished ...>
[pid 15365] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15365] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15364] <... futex resumed>)        = 0
[pid 15364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15365] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15364] <... futex resumed>)        = 0
[pid 15364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15365] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15365] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15364] <... futex resumed>)        = 0
[pid 15364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15365] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15364] <... futex resumed>)        = 0
[pid 15364] exit_group(0)               = ?
[pid 15365] +++ exited with 0 +++
[pid 15364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15364, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15366
./strace-static-x86_64: Process 15366 attached
[pid 15366] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15366] setpgid(0, 0)               = 0
[pid 15366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15366] write(3, "1000", 4)         = 4
[pid 15366] close(3)                    = 0
[pid 15366] write(1, "executing program\n", 18executing program
) = 18
[pid 15366] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15366] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15366] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15366] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15367]}, 88) = 15367
[pid 15366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15367 attached
 <unfinished ...>
[pid 15367] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15367] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15366] <... futex resumed>)        = 0
[pid 15367] <... futex resumed>)        = 1
[pid 15366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15367] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15366] <... futex resumed>)        = 0
[pid 15367] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15366] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15367] <... futex resumed>)        = 0
[pid 15366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15367] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15366] <... futex resumed>)        = 0
[pid 15366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15367] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15366] <... futex resumed>)        = 0
[pid 15367] <... futex resumed>)        = 1
[pid 15366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15367] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15366] <... futex resumed>)        = 0
[pid 15366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15367] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15366] <... futex resumed>)        = 0
[pid 15366] exit_group(0)               = ?
[pid 15367] +++ exited with 0 +++
[pid 15366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
executing program
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15368
./strace-static-x86_64: Process 15368 attached
[pid 15368] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15368] setpgid(0, 0)               = 0
[pid 15368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15368] write(3, "1000", 4)         = 4
[pid 15368] close(3)                    = 0
[pid 15368] write(1, "executing program\n", 18) = 18
[pid 15368] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15368] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15368] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15368] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15369 attached
 => {parent_tid=[15369]}, 88) = 15369
[pid 15369] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15369] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15369] <... futex resumed>)        = 0
[pid 15368] <... futex resumed>)        = 1
[pid 15369] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15369] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15369] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15368] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15369] <... futex resumed>)        = 0
[pid 15368] <... futex resumed>)        = 1
[pid 15369] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15369] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15369] <... futex resumed>)        = 0
[pid 15368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15369] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15369] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15368] <... futex resumed>)        = 0
[pid 15368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15369] <... futex resumed>)        = 0
[pid 15368] <... futex resumed>)        = 1
[pid 15368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15369] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15369] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15368] <... futex resumed>)        = 0
[pid 15368] exit_group(0)               = ?
[pid 15369] <... futex resumed>)        = ?
[pid 15369] +++ exited with 0 +++
[pid 15368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15370
./strace-static-x86_64: Process 15370 attached
[pid 15370] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15370] setpgid(0, 0)               = 0
[pid 15370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15370] write(3, "1000", 4)         = 4
executing program
[pid 15370] close(3)                    = 0
[pid 15370] write(1, "executing program\n", 18) = 18
[pid 15370] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15370] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15370] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15370] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15370] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15370] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15371]}, 88) = 15371
[pid 15370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15371 attached
 <unfinished ...>
[pid 15371] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15371] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15371] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15370] <... futex resumed>)        = 0
[pid 15370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15371] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15370] <... futex resumed>)        = 0
[pid 15370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15371] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15370] <... futex resumed>)        = 0
[pid 15370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15371] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15370] <... futex resumed>)        = 0
[pid 15370] exit_group(0)               = ?
[pid 15371] +++ exited with 0 +++
[pid 15370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15372 attached
 <unfinished ...>
[pid 15372] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15372] setpgid(0, 0)               = 0
[pid 15372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15372
[pid 15372] <... openat resumed>)       = 3
[pid 15372] write(3, "1000", 4)         = 4
[pid 15372] close(3)                    = 0
executing program
[pid 15372] write(1, "executing program\n", 18) = 18
[pid 15372] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15372] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15372] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15372] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15373]}, 88) = 15373
[pid 15372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15373 attached
 <unfinished ...>
[pid 15373] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15373] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15373] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15372] <... futex resumed>)        = 0
[pid 15372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15373] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15372] <... futex resumed>)        = 0
[pid 15372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15373] <... futex resumed>)        = 1
[pid 15373] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15372] <... futex resumed>)        = 0
[pid 15372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15373] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15372] <... futex resumed>)        = 0
[pid 15372] exit_group(0)               = ?
[pid 15373] +++ exited with 0 +++
[pid 15372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15374 attached
 <unfinished ...>
[pid 15374] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15374
[pid 15374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15374] setpgid(0, 0)               = 0
[pid 15374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15374] write(3, "1000", 4)         = 4
[pid 15374] close(3)                    = 0
[pid 15374] write(1, "executing program\n", 18executing program
) = 18
[pid 15374] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15374] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15374] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15374] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15374] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15374] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15375 attached
 => {parent_tid=[15375]}, 88) = 15375
[pid 15375] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15374] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15375] <... futex resumed>)        = 0
[pid 15375] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15375] <... futex resumed>)        = 0
[pid 15375] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15375] <... futex resumed>)        = 0
[pid 15375] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15375] <... futex resumed>)        = 0
[pid 15374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15375] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15374] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15374] exit_group(0)               = ?
[pid 15375] <... futex resumed>)        = ?
[pid 15375] +++ exited with 0 +++
[pid 15374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15376
./strace-static-x86_64: Process 15376 attached
[pid 15376] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15376] setpgid(0, 0)               = 0
[pid 15376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15376] write(3, "1000", 4)         = 4
[pid 15376] close(3)                    = 0
executing program
[pid 15376] write(1, "executing program\n", 18) = 18
[pid 15376] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15376] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15376] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15376] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15376] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15376] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15377 attached
 <unfinished ...>
[pid 15377] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15377] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15376] <... clone3 resumed> => {parent_tid=[15377]}, 88) = 15377
[pid 15376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15377] <... futex resumed>)        = 0
[pid 15376] <... futex resumed>)        = 1
[pid 15377] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15377] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15377] <... futex resumed>)        = 0
[pid 15376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15377] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15377] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15376] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15377] <... futex resumed>)        = 0
[pid 15376] <... futex resumed>)        = 1
[pid 15376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15377] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15376] <... futex resumed>)        = 0
[pid 15376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15377] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15376] <... futex resumed>)        = 0
[pid 15377] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15376] exit_group(0)               = ?
[pid 15377] <... futex resumed>)        = ?
[pid 15377] +++ exited with 0 +++
[pid 15376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15376, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15378
./strace-static-x86_64: Process 15378 attached
[pid 15378] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15378] setpgid(0, 0)               = 0
[pid 15378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15378] write(3, "1000", 4)         = 4
[pid 15378] close(3executing program
)                    = 0
[pid 15378] write(1, "executing program\n", 18) = 18
[pid 15378] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15378] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15378] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15378] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15379]}, 88) = 15379
[pid 15378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15379 attached
 <unfinished ...>
[pid 15379] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15379] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15378] <... futex resumed>)        = 0
[pid 15378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15379] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15378] <... futex resumed>)        = 0
[pid 15378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15379] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15378] <... futex resumed>)        = 0
[pid 15378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15379] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15378] <... futex resumed>)        = 0
[pid 15378] exit_group(0)               = ?
[pid 15379] +++ exited with 0 +++
[pid 15378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15380
./strace-static-x86_64: Process 15380 attached
[pid 15380] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15380] setpgid(0, 0)               = 0
[pid 15380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15380] write(3, "1000", 4)         = 4
[pid 15380] close(3)                    = 0
[pid 15380] write(1, "executing program\n", 18executing program
) = 18
[pid 15380] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15380] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15380] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15380] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15381]}, 88) = 15381
[pid 15380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15381 attached
 <unfinished ...>
[pid 15381] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15381] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15381] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15380] <... futex resumed>)        = 0
[pid 15380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15381] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15380] <... futex resumed>)        = 0
[pid 15380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15381] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15380] <... futex resumed>)        = 0
[pid 15380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15381] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15380] <... futex resumed>)        = 0
[pid 15380] exit_group(0 <unfinished ...>
[pid 15381] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15380] <... exit_group resumed>)   = ?
[pid 15381] <... futex resumed>)        = ?
[pid 15381] +++ exited with 0 +++
[pid 15380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15382 attached
 <unfinished ...>
[pid 15382] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15382] setpgid(0, 0)               = 0
[pid 15382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15382
[pid 15382] <... openat resumed>)       = 3
[pid 15382] write(3, "1000", 4)         = 4
[pid 15382] close(3)                    = 0
[pid 15382] write(1, "executing program\n", 18) = 18
[pid 15382] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 15382] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15382] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15382] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15382] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15383]}, 88) = 15383
[pid 15382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15383 attached
 <unfinished ...>
[pid 15383] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15383] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15383] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15382] <... futex resumed>)        = 0
[pid 15382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15383] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15382] <... futex resumed>)        = 0
[pid 15382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15383] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15382] <... futex resumed>)        = 0
[pid 15382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15383] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15382] <... futex resumed>)        = 0
[pid 15382] exit_group(0)               = ?
[pid 15383] +++ exited with 0 +++
[pid 15382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15384
./strace-static-x86_64: Process 15384 attached
[pid 15384] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15384] setpgid(0, 0)               = 0
[pid 15384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15384] write(3, "1000", 4)         = 4
[pid 15384] close(3)                    = 0
[pid 15384] write(1, "executing program\n", 18executing program
) = 18
[pid 15384] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15384] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15384] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15384] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15384] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15384] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15385]}, 88) = 15385
[pid 15384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15385 attached
 <unfinished ...>
[pid 15385] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15385] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15384] <... futex resumed>)        = 0
[pid 15384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15385] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15384] <... futex resumed>)        = 0
[pid 15384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15385] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15384] <... futex resumed>)        = 0
[pid 15384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15385] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15384] <... futex resumed>)        = 0
[pid 15384] exit_group(0)               = ?
[pid 15385] +++ exited with 0 +++
[pid 15384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15384, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15386 attached
 <unfinished ...>
[pid 15386] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15386] setpgid(0, 0)               = 0
[pid 15386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15386] write(3, "1000", 4)         = 4
[pid 15386] close(3executing program
)                    = 0
[pid 15386] write(1, "executing program\n", 18) = 18
[pid 15386] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15386] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15386] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15386] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15387]}, 88) = 15387
[pid 15386] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15387 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15386
[pid 15387] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15387] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15387] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15386] <... futex resumed>)        = 0
[pid 15386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15387] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15386] <... futex resumed>)        = 0
[pid 15386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15387] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15386] <... futex resumed>)        = 0
[pid 15386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15387] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15386] <... futex resumed>)        = 0
[pid 15386] exit_group(0)               = ?
[pid 15387] +++ exited with 0 +++
[pid 15386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15388 attached
, child_tidptr=0x55557060c690) = 15388
[pid 15388] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15388] setpgid(0, 0)               = 0
[pid 15388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15388] write(3, "1000", 4)         = 4
[pid 15388] close(3)                    = 0
[pid 15388] write(1, "executing program\n", 18) = 18
[pid 15388] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15388] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15388] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15388] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15388] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15389 attached
 => {parent_tid=[15389]}, 88) = 15389
[pid 15389] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15389] <... futex resumed>)        = 0
[pid 15389] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15389] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15388] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15389] <... futex resumed>)        = 0
[pid 15389] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15388] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15389] <... futex resumed>)        = 0
[pid 15389] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15388] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15389] <... futex resumed>)        = 0
[pid 15388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15389] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15388] <... futex resumed>)        = 0
[pid 15388] exit_group(0)               = ?
[pid 15389] <... futex resumed>)        = ?
[pid 15389] +++ exited with 0 +++
[pid 15388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15390
./strace-static-x86_64: Process 15390 attached
[pid 15390] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15390] setpgid(0, 0)               = 0
[pid 15390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15390] write(3, "1000", 4)         = 4
[pid 15390] close(3executing program
)                    = 0
[pid 15390] write(1, "executing program\n", 18) = 18
[pid 15390] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15390] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15390] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15390] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15391]}, 88) = 15391
[pid 15390] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15391 attached
 <unfinished ...>
[pid 15391] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15391] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15391] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15390] <... futex resumed>)        = 0
[pid 15390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15391] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15390] <... futex resumed>)        = 0
[pid 15390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15391] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15390] <... futex resumed>)        = 0
[pid 15390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15391] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15390] <... futex resumed>)        = 0
[pid 15390] exit_group(0)               = ?
[pid 15391] +++ exited with 0 +++
[pid 15390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15392 attached
 <unfinished ...>
[pid 15392] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15392] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15392
[pid 15392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15392] write(3, "1000", 4)         = 4
[pid 15392] close(3)                    = 0
[pid 15392] write(1, "executing program\n", 18executing program
) = 18
[pid 15392] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15392] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15392] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15392] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15392] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15392] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15392] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15393 attached
 => {parent_tid=[15393]}, 88) = 15393
[pid 15393] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15393] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15392] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15393] <... futex resumed>)        = 0
[pid 15393] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15393] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15393] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15392] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15393] <... futex resumed>)        = 0
[pid 15393] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15393] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15393] <... futex resumed>)        = 0
[pid 15393] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15393] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15393] <... futex resumed>)        = 0
[pid 15393] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15393] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15392] exit_group(0)               = ?
[pid 15393] <... futex resumed>)        = ?
[pid 15393] +++ exited with 0 +++
[pid 15392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15392, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15394 attached
, child_tidptr=0x55557060c690) = 15394
[pid 15394] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15394] setpgid(0, 0)               = 0
[pid 15394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15394] write(3, "1000", 4)         = 4
[pid 15394] close(3)                    = 0
[pid 15394] write(1, "executing program\n", 18executing program
) = 18
[pid 15394] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15394] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15394] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15394] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15395]}, 88) = 15395
[pid 15394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15395 attached
 <unfinished ...>
[pid 15395] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15395] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15394] <... futex resumed>)        = 0
[pid 15394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15395] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15394] <... futex resumed>)        = 0
[pid 15394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15395] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15394] <... futex resumed>)        = 0
[pid 15394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15395] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15394] <... futex resumed>)        = 0
[pid 15394] exit_group(0)               = ?
[pid 15395] +++ exited with 0 +++
[pid 15394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15396 attached
 <unfinished ...>
[pid 15396] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15396] setpgid(0, 0)               = 0
[pid 15396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15396] write(3, "1000", 4)         = 4
executing program
[pid 15396] close(3)                    = 0
[pid 15396] write(1, "executing program\n", 18) = 18
[pid 15396] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15396] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15396] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15396] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15396] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15396] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15397]}, 88) = 15397
./strace-static-x86_64: Process 15397 attached
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15396
[pid 15396] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15397] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15397] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15397] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15396] <... futex resumed>)        = 0
[pid 15396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15397] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15396] <... futex resumed>)        = 0
[pid 15396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15397] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15396] <... futex resumed>)        = 0
[pid 15396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15397] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15396] <... futex resumed>)        = 0
[pid 15396] exit_group(0)               = ?
[pid 15397] +++ exited with 0 +++
[pid 15396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15398 attached
, child_tidptr=0x55557060c690) = 15398
[pid 15398] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15398] setpgid(0, 0)               = 0
[pid 15398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15398] write(3, "1000", 4)         = 4
[pid 15398] close(3)                    = 0
[pid 15398] write(1, "executing program\n", 18) = 18
[pid 15398] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15398] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15398] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15398] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15398] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15398] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15398] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15399 attached
 => {parent_tid=[15399]}, 88) = 15399
[pid 15399] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15399] <... futex resumed>)        = 0
[pid 15399] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15399] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15399] <... futex resumed>)        = 0
[pid 15399] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15399] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15399] <... futex resumed>)        = 0
[pid 15399] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15399] <... futex resumed>)        = 0
[pid 15398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15399] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15398] exit_group(0)               = ?
[pid 15399] <... futex resumed>)        = ?
[pid 15399] +++ exited with 0 +++
[pid 15398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15400
./strace-static-x86_64: Process 15400 attached
[pid 15400] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15400] setpgid(0, 0)               = 0
[pid 15400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15400] write(3, "1000", 4)         = 4
[pid 15400] close(3)                    = 0
[pid 15400] write(1, "executing program\n", 18executing program
) = 18
[pid 15400] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15400] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15400] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15400] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15400] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15400] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15401]}, 88) = 15401
[pid 15400] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15401 attached
 <unfinished ...>
[pid 15401] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15401] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15401] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15400] <... futex resumed>)        = 0
[pid 15400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15401] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15400] <... futex resumed>)        = 0
[pid 15400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15401] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15400] <... futex resumed>)        = 0
[pid 15400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15401] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15400] <... futex resumed>)        = 0
[pid 15400] exit_group(0)               = ?
[pid 15401] +++ exited with 0 +++
[pid 15400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15402 attached
 <unfinished ...>
[pid 15402] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15402] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15402
[pid 15402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15402] write(3, "1000", 4)         = 4
[pid 15402] close(3)                    = 0
[pid 15402] write(1, "executing program\n", 18executing program
) = 18
[pid 15402] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15402] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15402] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15402] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15403]}, 88) = 15403
[pid 15402] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15403 attached
 <unfinished ...>
[pid 15403] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15403] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15403] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15402] <... futex resumed>)        = 0
[pid 15402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15403] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15402] <... futex resumed>)        = 0
[pid 15402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15403] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15402] <... futex resumed>)        = 0
[pid 15402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15403] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15402] <... futex resumed>)        = 0
[pid 15402] exit_group(0)               = ?
[pid 15403] +++ exited with 0 +++
[pid 15402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15404 attached
 <unfinished ...>
[pid 15404] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15404] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15404
[pid 15404] <... setpgid resumed>)      = 0
[pid 15404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15404] write(3, "1000", 4)         = 4
[pid 15404] close(3executing program
)                    = 0
[pid 15404] write(1, "executing program\n", 18) = 18
[pid 15404] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15404] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15404] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15404] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15404] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15404] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15404] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15405 attached
 => {parent_tid=[15405]}, 88) = 15405
[pid 15404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15405] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15405] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15404] <... futex resumed>)        = 0
[pid 15404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15405] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15404] <... futex resumed>)        = 0
[pid 15404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15405] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15404] <... futex resumed>)        = 0
[pid 15404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15405] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15404] <... futex resumed>)        = 0
[pid 15404] exit_group(0)               = ?
[pid 15405] +++ exited with 0 +++
[pid 15404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15404, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15406 attached
, child_tidptr=0x55557060c690) = 15406
[pid 15406] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15406] setpgid(0, 0)               = 0
[pid 15406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15406] write(3, "1000", 4)         = 4
[pid 15406] close(3)                    = 0
executing program
[pid 15406] write(1, "executing program\n", 18) = 18
[pid 15406] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15406] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15406] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15406] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15406] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15406] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15407 attached
 => {parent_tid=[15407]}, 88) = 15407
[pid 15407] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15407] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15407] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15407] <... futex resumed>)        = 0
[pid 15407] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15407] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15407] <... futex resumed>)        = 0
[pid 15407] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15407] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15407] <... futex resumed>)        = 0
[pid 15407] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15407] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15407] <... futex resumed>)        = 0
[pid 15407] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15407] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15406] exit_group(0)               = ?
[pid 15407] <... futex resumed>)        = ?
[pid 15407] +++ exited with 0 +++
[pid 15406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15408 attached
, child_tidptr=0x55557060c690) = 15408
[pid 15408] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15408] setpgid(0, 0)               = 0
[pid 15408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15408] write(3, "1000", 4)         = 4
[pid 15408] close(3)                    = 0
[pid 15408] write(1, "executing program\n", 18executing program
) = 18
[pid 15408] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15408] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15408] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15408] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15409]}, 88) = 15409
[pid 15408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15409 attached
 <unfinished ...>
[pid 15409] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15409] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15408] <... futex resumed>)        = 0
[pid 15408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15409] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15408] <... futex resumed>)        = 0
[pid 15408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15409] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15408] <... futex resumed>)        = 0
[pid 15408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15409] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15408] <... futex resumed>)        = 0
[pid 15408] exit_group(0)               = ?
[pid 15409] +++ exited with 0 +++
[pid 15408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15410 attached
 <unfinished ...>
[pid 15410] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15410] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15410
[pid 15410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15410] write(3, "1000", 4)         = 4
[pid 15410] close(3)                    = 0
[pid 15410] write(1, "executing program\n", 18executing program
) = 18
[pid 15410] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15410] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15410] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15410] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15410] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15410] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15410] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15411]}, 88) = 15411
[pid 15410] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15411 attached
 <unfinished ...>
[pid 15411] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15411] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15411] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15410] <... futex resumed>)        = 0
[pid 15410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15411] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15410] <... futex resumed>)        = 0
[pid 15410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15411] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15410] <... futex resumed>)        = 0
[pid 15410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15411] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15410] <... futex resumed>)        = 0
[pid 15410] exit_group(0)               = ?
[pid 15411] +++ exited with 0 +++
[pid 15410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15412
./strace-static-x86_64: Process 15412 attached
[pid 15412] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15412] setpgid(0, 0)               = 0
[pid 15412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15412] write(3, "1000", 4)         = 4
[pid 15412] close(3)                    = 0
[pid 15412] write(1, "executing program\n", 18executing program
) = 18
[pid 15412] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15412] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15412] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15412] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15413]}, 88) = 15413
[pid 15412] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15413 attached
 <unfinished ...>
[pid 15413] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15413] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15413] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15412] <... futex resumed>)        = 0
[pid 15412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15413] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15412] <... futex resumed>)        = 0
[pid 15412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15413] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15412] <... futex resumed>)        = 0
[pid 15412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15413] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15412] <... futex resumed>)        = 0
[pid 15412] exit_group(0)               = ?
[pid 15413] +++ exited with 0 +++
[pid 15412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15414 attached
 <unfinished ...>
[pid 15414] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15414] setpgid(0, 0)               = 0
[pid 15414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15414
[pid 15414] <... openat resumed>)       = 3
[pid 15414] write(3, "1000", 4)         = 4
[pid 15414] close(3)                    = 0
executing program
[pid 15414] write(1, "executing program\n", 18) = 18
[pid 15414] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15414] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15414] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15414] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15414] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15414] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15415]}, 88) = 15415
./strace-static-x86_64: Process 15415 attached
[pid 15414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15415] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15415] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15414] <... futex resumed>)        = 0
[pid 15414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15415] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15414] <... futex resumed>)        = 0
[pid 15414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15415] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15414] <... futex resumed>)        = 0
[pid 15414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15415] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15414] <... futex resumed>)        = 0
[pid 15414] exit_group(0)               = ?
[pid 15415] +++ exited with 0 +++
[pid 15414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15416 attached
 <unfinished ...>
[pid 15416] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15416] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15416
[pid 15416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15416] write(3, "1000", 4)         = 4
[pid 15416] close(3)                    = 0
[pid 15416] write(1, "executing program\n", 18) = 18
[pid 15416] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15416] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15416] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15416] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15416] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15416] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15417]}, 88) = 15417
[pid 15416] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15417 attached
 <unfinished ...>
[pid 15417] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15417] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15416] <... futex resumed>)        = 0
[pid 15416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15417] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15416] <... futex resumed>)        = 0
[pid 15416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15417] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15416] <... futex resumed>)        = 0
[pid 15416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15417] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15416] <... futex resumed>)        = 0
[pid 15416] exit_group(0)               = ?
[pid 15417] +++ exited with 0 +++
[pid 15416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15418 attached
 <unfinished ...>
[pid 15418] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15418] setpgid(0, 0)               = 0
[pid 15418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15418] write(3, "1000", 4)         = 4
[pid 15418] close(3executing program
)                    = 0
[pid 15418] write(1, "executing program\n", 18) = 18
[pid 15418] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15418] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15418] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15418] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15419]}, 88) = 15419
[pid 15418] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15419 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15418
[pid 15419] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15419] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15419] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15418] <... futex resumed>)        = 0
[pid 15418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15419] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15418] <... futex resumed>)        = 0
[pid 15418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15419] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15418] <... futex resumed>)        = 0
[pid 15418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15419] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15418] <... futex resumed>)        = 0
[pid 15418] exit_group(0)               = ?
[pid 15419] +++ exited with 0 +++
[pid 15418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15420 attached
 <unfinished ...>
[pid 15420] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15420] setpgid(0, 0)               = 0
[pid 15420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15420
[pid 15420] write(3, "1000", 4)         = 4
executing program
[pid 15420] close(3)                    = 0
[pid 15420] write(1, "executing program\n", 18) = 18
[pid 15420] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15420] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15420] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15420] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15421]}, 88) = 15421
./strace-static-x86_64: Process 15421 attached
[pid 15420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15421] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15421] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15421] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15420] <... futex resumed>)        = 0
[pid 15420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15421] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15420] <... futex resumed>)        = 0
[pid 15420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15421] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15420] <... futex resumed>)        = 0
[pid 15420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15421] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15420] <... futex resumed>)        = 0
[pid 15420] exit_group(0)               = ?
[pid 15421] +++ exited with 0 +++
[pid 15420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15422 attached
, child_tidptr=0x55557060c690) = 15422
[pid 15422] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15422] setpgid(0, 0)               = 0
[pid 15422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15422] write(3, "1000", 4)         = 4
[pid 15422] close(3)                    = 0
[pid 15422] write(1, "executing program\n", 18executing program
) = 18
[pid 15422] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15422] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15422] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15422] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15423 attached
 <unfinished ...>
[pid 15423] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15423] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15423] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15422] <... clone3 resumed> => {parent_tid=[15423]}, 88) = 15423
[pid 15422] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15423] <... futex resumed>)        = 0
[pid 15422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15423] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15423] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15422] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15423] <... futex resumed>)        = 0
[pid 15423] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15423] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15423] <... futex resumed>)        = 0
[pid 15423] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15423] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15423] <... futex resumed>)        = 0
[pid 15423] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15423] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15422] exit_group(0)               = ?
[pid 15423] <... futex resumed>)        = ?
[pid 15423] +++ exited with 0 +++
[pid 15422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15424 attached
, child_tidptr=0x55557060c690) = 15424
[pid 15424] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15424] setpgid(0, 0)               = 0
[pid 15424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15424] write(3, "1000", 4)         = 4
[pid 15424] close(3)                    = 0
[pid 15424] write(1, "executing program\n", 18executing program
) = 18
[pid 15424] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15424] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15424] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15424] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15424] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15425]}, 88) = 15425
[pid 15424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15425 attached
 <unfinished ...>
[pid 15425] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15425] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15424] <... futex resumed>)        = 0
[pid 15424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15425] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15424] <... futex resumed>)        = 0
[pid 15424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15425] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15424] <... futex resumed>)        = 0
[pid 15424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15425] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15424] <... futex resumed>)        = 0
[pid 15424] exit_group(0)               = ?
[pid 15425] +++ exited with 0 +++
[pid 15424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15426 attached
 <unfinished ...>
[pid 15426] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15426] setpgid(0, 0)               = 0
[pid 15426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15426
[pid 15426] <... openat resumed>)       = 3
[pid 15426] write(3, "1000", 4)         = 4
[pid 15426] close(3executing program
)                    = 0
[pid 15426] write(1, "executing program\n", 18) = 18
[pid 15426] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15426] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15426] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15426] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15426] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15427]}, 88) = 15427
[pid 15426] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15427 attached
 <unfinished ...>
[pid 15427] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15427] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15427] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15426] <... futex resumed>)        = 0
[pid 15426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15427] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15426] <... futex resumed>)        = 0
[pid 15426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15427] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15426] <... futex resumed>)        = 0
[pid 15426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15427] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15426] <... futex resumed>)        = 0
[pid 15426] exit_group(0)               = ?
[pid 15427] +++ exited with 0 +++
[pid 15426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15428 attached
 <unfinished ...>
[pid 15428] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15428
[pid 15428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15428] setpgid(0, 0)               = 0
[pid 15428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15428] write(3, "1000", 4)         = 4
[pid 15428] close(3)                    = 0
[pid 15428] write(1, "executing program\n", 18executing program
) = 18
[pid 15428] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15428] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15428] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15428] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15428] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15428] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15429]}, 88) = 15429
[pid 15428] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15429 attached
 <unfinished ...>
[pid 15429] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15429] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15429] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15428] <... futex resumed>)        = 0
[pid 15428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15429] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15428] <... futex resumed>)        = 0
[pid 15428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15429] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15428] <... futex resumed>)        = 0
[pid 15428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15429] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15428] <... futex resumed>)        = 0
[pid 15428] exit_group(0)               = ?
[pid 15429] +++ exited with 0 +++
[pid 15428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15430 attached
 <unfinished ...>
[pid 15430] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15430] setpgid(0, 0)               = 0
[pid 15430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15430] write(3, "1000", 4)         = 4
executing program
[pid 15430] close(3)                    = 0
[pid 15430] write(1, "executing program\n", 18) = 18
[pid 15430] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15430] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15430] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15430] rt_sigprocmask(SIG_BLOCK, ~[],  <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15430
[pid 15430] <... rt_sigprocmask resumed>[], 8) = 0
[pid 15430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15431]}, 88) = 15431
./strace-static-x86_64: Process 15431 attached
[pid 15430] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15431] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15431] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15431] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15430] <... futex resumed>)        = 0
[pid 15430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15431] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15430] <... futex resumed>)        = 0
[pid 15430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15431] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15430] <... futex resumed>)        = 0
[pid 15430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15431] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15430] <... futex resumed>)        = 0
[pid 15430] exit_group(0)               = ?
[pid 15431] +++ exited with 0 +++
[pid 15430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15432
./strace-static-x86_64: Process 15432 attached
[pid 15432] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15432] setpgid(0, 0)               = 0
[pid 15432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15432] write(3, "1000", 4)         = 4
[pid 15432] close(3)                    = 0
[pid 15432] write(1, "executing program\n", 18executing program
) = 18
[pid 15432] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15432] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15432] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15432] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15433 attached
 => {parent_tid=[15433]}, 88) = 15433
[pid 15433] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15433] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15432] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15433] <... futex resumed>)        = 0
[pid 15433] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15433] <... futex resumed>)        = 0
[pid 15433] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15433] <... futex resumed>)        = 0
[pid 15433] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15433] <... futex resumed>)        = 0
[pid 15432] <... futex resumed>)        = 1
[pid 15432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15433] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15432] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15432] exit_group(0)               = ?
[pid 15433] <... futex resumed>)        = ?
[pid 15433] +++ exited with 0 +++
[pid 15432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15434
./strace-static-x86_64: Process 15434 attached
[pid 15434] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15434] setpgid(0, 0)               = 0
[pid 15434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15434] write(3, "1000", 4)         = 4
executing program
[pid 15434] close(3)                    = 0
[pid 15434] write(1, "executing program\n", 18) = 18
[pid 15434] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15434] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15434] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15434] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15434] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15434] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15435]}, 88) = 15435
[pid 15434] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15435 attached
 <unfinished ...>
[pid 15435] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15435] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15435] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15435] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15434] <... futex resumed>)        = 0
[pid 15434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15435] <... futex resumed>)        = 0
[pid 15435] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15434] <... futex resumed>)        = 0
[pid 15434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15435] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15434] <... futex resumed>)        = 0
[pid 15434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15435] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15434] <... futex resumed>)        = 0
[pid 15434] exit_group(0)               = ?
[pid 15435] +++ exited with 0 +++
[pid 15434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15436 attached
, child_tidptr=0x55557060c690) = 15436
[pid 15436] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15436] setpgid(0, 0)               = 0
[pid 15436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15436] write(3, "1000", 4)         = 4
[pid 15436] close(3)                    = 0
[pid 15436] write(1, "executing program\n", 18executing program
) = 18
[pid 15436] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15436] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15436] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15436] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15436] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15436] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15437 attached
 => {parent_tid=[15437]}, 88) = 15437
[pid 15437] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15437] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15436] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15437] <... futex resumed>)        = 0
[pid 15437] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15437] <... futex resumed>)        = 0
[pid 15437] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15437] <... futex resumed>)        = 0
[pid 15437] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15437] <... futex resumed>)        = 0
[pid 15437] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15436] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15436] exit_group(0)               = ?
[pid 15437] <... futex resumed>)        = ?
[pid 15437] +++ exited with 0 +++
[pid 15436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15438
./strace-static-x86_64: Process 15438 attached
[pid 15438] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15438] setpgid(0, 0)               = 0
[pid 15438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15438] write(3, "1000", 4)         = 4
[pid 15438] close(3executing program
)                    = 0
[pid 15438] write(1, "executing program\n", 18) = 18
[pid 15438] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15438] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15438] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15439 attached
 <unfinished ...>
[pid 15439] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15439] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15438] <... clone3 resumed> => {parent_tid=[15439]}, 88) = 15439
[pid 15438] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15439] <... futex resumed>)        = 0
[pid 15438] <... futex resumed>)        = 1
[pid 15439] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15439] <... futex resumed>)        = 0
[pid 15438] <... futex resumed>)        = 1
[pid 15439] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15439] <... futex resumed>)        = 0
[pid 15438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15439] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15438] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15439] <... futex resumed>)        = 0
[pid 15438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15439] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15438] <... futex resumed>)        = 0
[pid 15439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15438] exit_group(0)               = ?
[pid 15439] <... futex resumed>)        = ?
[pid 15439] +++ exited with 0 +++
[pid 15438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15440
./strace-static-x86_64: Process 15440 attached
[pid 15440] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15440] setpgid(0, 0)               = 0
[pid 15440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15440] write(3, "1000", 4)         = 4
executing program
[pid 15440] close(3)                    = 0
[pid 15440] write(1, "executing program\n", 18) = 18
[pid 15440] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15440] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15440] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15440] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15440] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15440] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15441 attached
 <unfinished ...>
[pid 15441] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15441] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15441] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15440] <... clone3 resumed> => {parent_tid=[15441]}, 88) = 15441
[pid 15440] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15441] <... futex resumed>)        = 0
[pid 15441] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15441] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15441] <... futex resumed>)        = 0
[pid 15440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15441] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15441] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15440] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15441] <... futex resumed>)        = 0
[pid 15441] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15441] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15441] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15440] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15441] <... futex resumed>)        = 0
[pid 15441] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15441] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15440] exit_group(0)               = ?
[pid 15441] <... futex resumed>)        = ?
[pid 15441] +++ exited with 0 +++
[pid 15440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15442
./strace-static-x86_64: Process 15442 attached
[pid 15442] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15442] setpgid(0, 0)               = 0
[pid 15442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15442] write(3, "1000", 4)         = 4
[pid 15442] close(3)                    = 0
executing program
[pid 15442] write(1, "executing program\n", 18) = 18
[pid 15442] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15442] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15442] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15442] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15442] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15442] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15443 attached
 <unfinished ...>
[pid 15443] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15443] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15442] <... clone3 resumed> => {parent_tid=[15443]}, 88) = 15443
[pid 15442] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15443] <... futex resumed>)        = 0
[pid 15442] <... futex resumed>)        = 1
[pid 15443] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15443] <... futex resumed>)        = 0
[pid 15443] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15443] <... futex resumed>)        = 0
[pid 15442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15443] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15442] <... futex resumed>)        = 0
[pid 15443] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15443] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15442] <... futex resumed>)        = 0
[pid 15443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15442] exit_group(0)               = ?
[pid 15443] <... futex resumed>)        = ?
[pid 15443] +++ exited with 0 +++
[pid 15442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15444
./strace-static-x86_64: Process 15444 attached
[pid 15444] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15444] setpgid(0, 0)               = 0
[pid 15444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15444] write(3, "1000", 4)         = 4
[pid 15444] close(3)                    = 0
executing program
[pid 15444] write(1, "executing program\n", 18) = 18
[pid 15444] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15444] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15444] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15444] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15445 attached
 <unfinished ...>
[pid 15445] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15444] <... clone3 resumed> => {parent_tid=[15445]}, 88) = 15445
[pid 15444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15445] <... futex resumed>)        = 0
[pid 15444] <... futex resumed>)        = 1
[pid 15445] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15445] <... futex resumed>)        = 0
[pid 15445] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15445] <... futex resumed>)        = 0
[pid 15444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15445] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15444] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15445] <... futex resumed>)        = 0
[pid 15444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15445] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15444] <... futex resumed>)        = 0
[pid 15445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15444] exit_group(0)               = ?
[pid 15445] <... futex resumed>)        = ?
[pid 15445] +++ exited with 0 +++
[pid 15444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
executing program
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15446
./strace-static-x86_64: Process 15446 attached
[pid 15446] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15446] setpgid(0, 0)               = 0
[pid 15446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15446] write(3, "1000", 4)         = 4
[pid 15446] close(3)                    = 0
[pid 15446] write(1, "executing program\n", 18) = 18
[pid 15446] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15446] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15446] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15446] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15446] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15447 attached
 => {parent_tid=[15447]}, 88) = 15447
[pid 15447] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15446] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15447] <... futex resumed>)        = 0
[pid 15446] <... futex resumed>)        = 1
[pid 15447] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15447] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15446] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15447] <... futex resumed>)        = 0
[pid 15447] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15447] <... futex resumed>)        = 0
[pid 15446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15447] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15446] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15447] <... futex resumed>)        = 0
[pid 15446] <... futex resumed>)        = 1
[pid 15447] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15446] exit_group(0)               = ?
[pid 15447] <... futex resumed>)        = ?
[pid 15447] +++ exited with 0 +++
[pid 15446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15448 attached
, child_tidptr=0x55557060c690) = 15448
[pid 15448] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15448] setpgid(0, 0)               = 0
[pid 15448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15448] write(3, "1000", 4)         = 4
[pid 15448] close(3)                    = 0
[pid 15448] write(1, "executing program\n", 18executing program
) = 18
[pid 15448] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15448] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15448] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15448] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15449]}, 88) = 15449
[pid 15448] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15449 attached
 <unfinished ...>
[pid 15449] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15449] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15449] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15448] <... futex resumed>)        = 0
[pid 15448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15449] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15448] <... futex resumed>)        = 0
[pid 15448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15449] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15448] <... futex resumed>)        = 0
[pid 15448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15449] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15448] <... futex resumed>)        = 0
[pid 15448] exit_group(0)               = ?
[pid 15449] +++ exited with 0 +++
[pid 15448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15450 attached
 <unfinished ...>
[pid 15450] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15450] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15450
[pid 15450] <... prctl resumed>)        = 0
[pid 15450] setpgid(0, 0)               = 0
[pid 15450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15450] write(3, "1000", 4)         = 4
[pid 15450] close(3)                    = 0
[pid 15450] write(1, "executing program\n", 18executing program
) = 18
[pid 15450] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15450] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15450] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15450] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15450] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15450] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15451]}, 88) = 15451
[pid 15450] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15451 attached
 <unfinished ...>
[pid 15451] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15451] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15451] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15450] <... futex resumed>)        = 0
[pid 15450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15451] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15450] <... futex resumed>)        = 0
[pid 15450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15451] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15450] <... futex resumed>)        = 0
[pid 15450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15451] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15450] <... futex resumed>)        = 0
[pid 15450] exit_group(0)               = ?
[pid 15451] +++ exited with 0 +++
[pid 15450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15452 attached
 <unfinished ...>
[pid 15452] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15452] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15452
[pid 15452] <... prctl resumed>)        = 0
[pid 15452] setpgid(0, 0)               = 0
[pid 15452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15452] write(3, "1000", 4)         = 4
[pid 15452] close(3)                    = 0
[pid 15452] write(1, "executing program\n", 18executing program
) = 18
[pid 15452] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15452] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15452] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15452] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15452] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15452] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15453]}, 88) = 15453
[pid 15452] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15453 attached
 <unfinished ...>
[pid 15453] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15453] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15453] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15452] <... futex resumed>)        = 0
[pid 15452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15453] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15452] <... futex resumed>)        = 0
[pid 15452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15453] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15452] <... futex resumed>)        = 0
[pid 15452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15453] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15452] <... futex resumed>)        = 0
[pid 15452] exit_group(0)               = ?
[pid 15453] +++ exited with 0 +++
[pid 15452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15454
./strace-static-x86_64: Process 15454 attached
[pid 15454] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15454] setpgid(0, 0)               = 0
[pid 15454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15454] write(3, "1000", 4)         = 4
[pid 15454] close(3)                    = 0
[pid 15454] write(1, "executing program\n", 18executing program
) = 18
[pid 15454] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15454] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15454] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15454] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15454] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15455]}, 88) = 15455
[pid 15454] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15455 attached
 <unfinished ...>
[pid 15455] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15455] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15455] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15454] <... futex resumed>)        = 0
[pid 15454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15455] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15454] <... futex resumed>)        = 0
[pid 15454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15455] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15454] <... futex resumed>)        = 0
[pid 15454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15455] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15454] <... futex resumed>)        = 0
[pid 15454] exit_group(0)               = ?
[pid 15455] +++ exited with 0 +++
[pid 15454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15456 attached
 <unfinished ...>
[pid 15456] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15456
[pid 15456] setpgid(0, 0)               = 0
[pid 15456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15456] write(3, "1000", 4executing program
)         = 4
[pid 15456] close(3)                    = 0
[pid 15456] write(1, "executing program\n", 18) = 18
[pid 15456] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15456] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15456] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15456] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15456] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15456] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15457 attached
 => {parent_tid=[15457]}, 88) = 15457
[pid 15457] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15457] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15456] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15457] <... futex resumed>)        = 0
[pid 15457] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15457] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15456] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15457] <... futex resumed>)        = 0
[pid 15457] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15457] <... futex resumed>)        = 0
[pid 15457] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15456] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15457] <... futex resumed>)        = 0
[pid 15457] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15456] exit_group(0)               = ?
[pid 15457] <... futex resumed>)        = ?
[pid 15457] +++ exited with 0 +++
[pid 15456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15458 attached
, child_tidptr=0x55557060c690) = 15458
[pid 15458] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15458] setpgid(0, 0)               = 0
[pid 15458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15458] write(3, "1000", 4)         = 4
[pid 15458] close(3)                    = 0
executing program
[pid 15458] write(1, "executing program\n", 18) = 18
[pid 15458] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15458] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15458] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15458] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15458] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15458] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15459 attached
 <unfinished ...>
[pid 15459] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15459] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15458] <... clone3 resumed> => {parent_tid=[15459]}, 88) = 15459
[pid 15458] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15459] <... futex resumed>)        = 0
[pid 15459] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15459] <... futex resumed>)        = 0
[pid 15459] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15458] <... futex resumed>)        = 0
[pid 15459] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15459] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15459] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15458] <... futex resumed>)        = 0
[pid 15458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15459] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15458] <... futex resumed>)        = 0
[pid 15459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15458] exit_group(0)               = ?
[pid 15459] <... futex resumed>)        = ?
[pid 15459] +++ exited with 0 +++
[pid 15458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15460
./strace-static-x86_64: Process 15460 attached
[pid 15460] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15460] setpgid(0, 0)               = 0
[pid 15460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15460] write(3, "1000", 4)         = 4
[pid 15460] close(3)                    = 0
[pid 15460] write(1, "executing program\n", 18executing program
) = 18
[pid 15460] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15460] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15460] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15460] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15460] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15460] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15461]}, 88) = 15461
[pid 15460] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15461 attached
 <unfinished ...>
[pid 15461] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15461] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15461] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15460] <... futex resumed>)        = 0
[pid 15460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15461] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15460] <... futex resumed>)        = 0
[pid 15460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15461] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15460] <... futex resumed>)        = 0
[pid 15460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15461] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15460] <... futex resumed>)        = 0
[pid 15460] exit_group(0)               = ?
[pid 15461] +++ exited with 0 +++
[pid 15460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15462 attached
 <unfinished ...>
[pid 15462] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15462] setpgid(0, 0)               = 0
[pid 15462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15462] write(3, "1000", 4)         = 4
[pid 15462] close(3executing program
)                    = 0
[pid 15462] write(1, "executing program\n", 18) = 18
[pid 15462] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15462] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15462] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15462] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15463]}, 88) = 15463
./strace-static-x86_64: Process 15463 attached
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15462
[pid 15462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15463] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15463] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15463] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15462] <... futex resumed>)        = 0
[pid 15462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15463] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15462] <... futex resumed>)        = 0
[pid 15462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15463] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15462] <... futex resumed>)        = 0
[pid 15462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15463] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15462] <... futex resumed>)        = 0
[pid 15462] exit_group(0)               = ?
[pid 15463] +++ exited with 0 +++
[pid 15462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15464 attached
, child_tidptr=0x55557060c690) = 15464
[pid 15464] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15464] setpgid(0, 0)               = 0
[pid 15464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15464] write(3, "1000", 4)         = 4
[pid 15464] close(3)                    = 0
[pid 15464] write(1, "executing program\n", 18executing program
) = 18
[pid 15464] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15464] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15464] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15464] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15465 attached
 => {parent_tid=[15465]}, 88) = 15465
[pid 15465] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15465] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15465] <... futex resumed>)        = 0
[pid 15465] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15465] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15465] <... futex resumed>)        = 0
[pid 15465] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15465] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15465] <... futex resumed>)        = 0
[pid 15464] <... futex resumed>)        = 1
[pid 15465] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15465] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15465] <... futex resumed>)        = 0
[pid 15465] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15465] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15465] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15464] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15464] exit_group(0)               = ?
[pid 15465] <... futex resumed>)        = ?
[pid 15465] +++ exited with 0 +++
[pid 15464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15466
./strace-static-x86_64: Process 15466 attached
[pid 15466] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15466] setpgid(0, 0)               = 0
[pid 15466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15466] write(3, "1000", 4)         = 4
[pid 15466] close(3)                    = 0
[pid 15466] write(1, "executing program\n", 18executing program
) = 18
[pid 15466] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15466] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15466] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15466] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15466] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15467 attached
 => {parent_tid=[15467]}, 88) = 15467
[pid 15467] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15467] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15467] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15467] <... futex resumed>)        = 0
[pid 15466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15467] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15467] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15466] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15467] <... futex resumed>)        = 0
[pid 15467] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15467] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15467] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15466] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15467] <... futex resumed>)        = 0
[pid 15467] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15467] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15467] <... futex resumed>)        = 0
[pid 15466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15467] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15467] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15466] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15466] exit_group(0)               = ?
[pid 15467] <... futex resumed>)        = ?
[pid 15467] +++ exited with 0 +++
[pid 15466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15468
./strace-static-x86_64: Process 15468 attached
[pid 15468] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15468] setpgid(0, 0)               = 0
[pid 15468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15468] write(3, "1000", 4)         = 4
[pid 15468] close(3)                    = 0
[pid 15468] write(1, "executing program\n", 18executing program
) = 18
[pid 15468] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15468] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15468] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15468] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15468] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15468] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15469 attached
 <unfinished ...>
[pid 15469] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15469] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15468] <... clone3 resumed> => {parent_tid=[15469]}, 88) = 15469
[pid 15468] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15469] <... futex resumed>)        = 0
[pid 15469] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15469] <... futex resumed>)        = 0
[pid 15468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15469] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15468] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15469] <... futex resumed>)        = 0
[pid 15468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15469] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15468] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15469] <... futex resumed>)        = 0
[pid 15469] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15469] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15468] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15468] exit_group(0)               = ?
[pid 15469] <... futex resumed>)        = ?
[pid 15469] +++ exited with 0 +++
[pid 15468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15470
./strace-static-x86_64: Process 15470 attached
[pid 15470] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15470] setpgid(0, 0)               = 0
[pid 15470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15470] write(3, "1000", 4)         = 4
[pid 15470] close(3)                    = 0
[pid 15470] write(1, "executing program\n", 18executing program
) = 18
[pid 15470] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15470] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15470] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15470] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15470] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15470] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15471]}, 88) = 15471
[pid 15470] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15471 attached
 <unfinished ...>
[pid 15471] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15471] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15471] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15470] <... futex resumed>)        = 0
[pid 15470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15471] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15470] <... futex resumed>)        = 0
[pid 15470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15471] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15470] <... futex resumed>)        = 0
[pid 15470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15471] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15470] <... futex resumed>)        = 0
[pid 15470] exit_group(0)               = ?
[pid 15471] +++ exited with 0 +++
[pid 15470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15472 attached
 <unfinished ...>
[pid 15472] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15472
[pid 15472] setpgid(0, 0)               = 0
[pid 15472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15472] write(3, "1000", 4)         = 4
[pid 15472] close(3)                    = 0
[pid 15472] write(1, "executing program\n", 18executing program
) = 18
[pid 15472] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15472] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15472] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15472] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15472] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15472] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15473 attached
 => {parent_tid=[15473]}, 88) = 15473
[pid 15473] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15472] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15473] <... futex resumed>)        = 0
[pid 15473] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15473] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15472] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15473] <... futex resumed>)        = 0
[pid 15473] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15472] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15473] <... futex resumed>)        = 0
[pid 15473] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15472] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15473] <... futex resumed>)        = 0
[pid 15473] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15473] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15472] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15472] exit_group(0)               = ?
[pid 15473] <... futex resumed>)        = ?
[pid 15473] +++ exited with 0 +++
[pid 15472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15474 attached
, child_tidptr=0x55557060c690) = 15474
[pid 15474] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15474] setpgid(0, 0)               = 0
[pid 15474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15474] write(3, "1000", 4)         = 4
[pid 15474] close(3)                    = 0
[pid 15474] write(1, "executing program\n", 18executing program
) = 18
[pid 15474] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15474] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15474] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15475]}, 88) = 15475
[pid 15474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15475 attached
 <unfinished ...>
[pid 15475] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15475] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15475] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15474] <... futex resumed>)        = 0
[pid 15474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15475] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15474] <... futex resumed>)        = 0
[pid 15474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15475] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15474] <... futex resumed>)        = 0
[pid 15474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15475] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15475] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15474] <... futex resumed>)        = 0
[pid 15474] exit_group(0)               = ?
[pid 15475] <... futex resumed>)        = ?
[pid 15475] +++ exited with 0 +++
[pid 15474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15476
./strace-static-x86_64: Process 15476 attached
[pid 15476] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15476] setpgid(0, 0)               = 0
[pid 15476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15476] write(3, "1000", 4)         = 4
executing program
[pid 15476] close(3)                    = 0
[pid 15476] write(1, "executing program\n", 18) = 18
[pid 15476] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15476] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15476] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15476] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15477]}, 88) = 15477
[pid 15476] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15477 attached
 <unfinished ...>
[pid 15477] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15477] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15477] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15476] <... futex resumed>)        = 0
[pid 15476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15477] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15476] <... futex resumed>)        = 0
[pid 15476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15477] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15476] <... futex resumed>)        = 0
[pid 15476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15477] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15476] <... futex resumed>)        = 0
[pid 15476] exit_group(0)               = ?
[pid 15477] +++ exited with 0 +++
[pid 15476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15478
./strace-static-x86_64: Process 15478 attached
[pid 15478] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15478] setpgid(0, 0)               = 0
[pid 15478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15478] write(3, "1000", 4)         = 4
[pid 15478] close(3)                    = 0
[pid 15478] write(1, "executing program\n", 18executing program
) = 18
[pid 15478] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15478] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15478] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15478] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15478] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15478] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15479]}, 88) = 15479
[pid 15478] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 15479 attached
 <unfinished ...>
[pid 15479] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15478] <... futex resumed>)        = 0
[pid 15479] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15479] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15479] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15479] <... futex resumed>)        = 0
[pid 15479] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15479] <... futex resumed>)        = 0
[pid 15479] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15479] <... futex resumed>)        = 0
[pid 15478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15479] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15478] exit_group(0)               = ?
[pid 15479] <... futex resumed>)        = ?
[pid 15479] +++ exited with 0 +++
[pid 15478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15480
./strace-static-x86_64: Process 15480 attached
[pid 15480] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15480] setpgid(0, 0)               = 0
[pid 15480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15480] write(3, "1000", 4)         = 4
[pid 15480] close(3)                    = 0
[pid 15480] write(1, "executing program\n", 18executing program
) = 18
[pid 15480] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15480] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15480] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15480] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15481]}, 88) = 15481
[pid 15480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15481 attached
 <unfinished ...>
[pid 15481] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15481] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15481] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15480] <... futex resumed>)        = 0
[pid 15480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15481] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15480] <... futex resumed>)        = 0
[pid 15480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15481] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15480] <... futex resumed>)        = 0
[pid 15480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15481] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15480] <... futex resumed>)        = 0
[pid 15480] exit_group(0)               = ?
[pid 15481] +++ exited with 0 +++
[pid 15480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15482 attached
 <unfinished ...>
[pid 15482] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15482] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15482
[pid 15482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15482] write(3, "1000", 4)         = 4
[pid 15482] close(3)                    = 0
[pid 15482] write(1, "executing program\n", 18executing program
) = 18
[pid 15482] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15482] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15482] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15482] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15482] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15482] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15483]}, 88) = 15483
[pid 15482] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15483 attached
 <unfinished ...>
[pid 15483] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15483] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15482] <... futex resumed>)        = 0
[pid 15482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15483] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15482] <... futex resumed>)        = 0
[pid 15482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15483] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15482] <... futex resumed>)        = 0
[pid 15482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15483] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15482] <... futex resumed>)        = 0
[pid 15482] exit_group(0)               = ?
[pid 15483] +++ exited with 0 +++
[pid 15482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15484 attached
 <unfinished ...>
[pid 15484] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15484] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15484
[pid 15484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15484] write(3, "1000", 4)         = 4
[pid 15484] close(3)                    = 0
executing program
[pid 15484] write(1, "executing program\n", 18) = 18
[pid 15484] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15484] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15484] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15484] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15485 attached
 => {parent_tid=[15485]}, 88) = 15485
[pid 15484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15485] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15485] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15484] <... futex resumed>)        = 0
[pid 15484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15485] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15484] <... futex resumed>)        = 0
[pid 15484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15485] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15484] <... futex resumed>)        = 0
[pid 15484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15485] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15484] <... futex resumed>)        = 0
[pid 15484] exit_group(0)               = ?
[pid 15485] +++ exited with 0 +++
[pid 15484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15486 attached
 <unfinished ...>
[pid 15486] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15486
[pid 15486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15486] setpgid(0, 0)               = 0
[pid 15486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15486] write(3, "1000", 4)         = 4
[pid 15486] close(3)                    = 0
executing program
[pid 15486] write(1, "executing program\n", 18) = 18
[pid 15486] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15486] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15486] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15486] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15486] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15487 attached
 => {parent_tid=[15487]}, 88) = 15487
[pid 15487] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15487] <... futex resumed>)        = 0
[pid 15487] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15487] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15487] <... futex resumed>)        = 0
[pid 15487] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15487] <... futex resumed>)        = 0
[pid 15487] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15487] <... futex resumed>)        = 0
[pid 15486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15487] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15486] exit_group(0)               = ?
[pid 15487] <... futex resumed>)        = ?
[pid 15487] +++ exited with 0 +++
[pid 15486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15488
./strace-static-x86_64: Process 15488 attached
[pid 15488] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15488] setpgid(0, 0)               = 0
[pid 15488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15488] write(3, "1000", 4executing program
)         = 4
[pid 15488] close(3)                    = 0
[pid 15488] write(1, "executing program\n", 18) = 18
[pid 15488] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15488] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15488] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15488] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15488] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15488] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15489]}, 88) = 15489
[pid 15488] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15489 attached
 <unfinished ...>
[pid 15489] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15489] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15488] <... futex resumed>)        = 0
[pid 15488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15489] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15488] <... futex resumed>)        = 0
[pid 15488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15489] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15488] <... futex resumed>)        = 0
[pid 15488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15489] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15488] <... futex resumed>)        = 0
[pid 15488] exit_group(0)               = ?
[pid 15489] +++ exited with 0 +++
[pid 15488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15490 attached
 <unfinished ...>
[pid 15490] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15490
[pid 15490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15490] setpgid(0, 0)               = 0
[pid 15490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15490] write(3, "1000", 4)         = 4
[pid 15490] close(3)                    = 0
[pid 15490] write(1, "executing program\n", 18executing program
) = 18
[pid 15490] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15490] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15490] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15490] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15490] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15490] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15491]}, 88) = 15491
[pid 15490] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15491 attached
 <unfinished ...>
[pid 15491] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15491] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15491] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15490] <... futex resumed>)        = 0
[pid 15490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15491] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15490] <... futex resumed>)        = 0
[pid 15490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15491] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15490] <... futex resumed>)        = 0
[pid 15490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15491] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15490] <... futex resumed>)        = 0
[pid 15490] exit_group(0)               = ?
[pid 15491] +++ exited with 0 +++
[pid 15490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15492 attached
 <unfinished ...>
[pid 15492] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15492] setpgid(0, 0)               = 0
[pid 15492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15492
[pid 15492] <... openat resumed>)       = 3
[pid 15492] write(3, "1000", 4)         = 4
[pid 15492] close(3)                    = 0
[pid 15492] write(1, "executing program\n", 18executing program
) = 18
[pid 15492] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15492] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15492] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15492] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15493]}, 88) = 15493
./strace-static-x86_64: Process 15493 attached
[pid 15492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15493] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15493] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15493] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15492] <... futex resumed>)        = 0
[pid 15492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15493] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15492] <... futex resumed>)        = 0
[pid 15492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15493] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15492] <... futex resumed>)        = 0
[pid 15492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15493] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15492] <... futex resumed>)        = 0
[pid 15492] exit_group(0)               = ?
[pid 15493] +++ exited with 0 +++
[pid 15492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15494 attached
 <unfinished ...>
[pid 15494] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15494
[pid 15494] setpgid(0, 0)               = 0
[pid 15494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15494] write(3, "1000", 4)         = 4
[pid 15494] close(3)                    = 0
[pid 15494] write(1, "executing program\n", 18) = 18
[pid 15494] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 15494] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15494] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15494] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15494] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15494] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15495]}, 88) = 15495
[pid 15494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15495 attached
 <unfinished ...>
[pid 15495] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15495] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15494] <... futex resumed>)        = 0
[pid 15494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15495] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15494] <... futex resumed>)        = 0
[pid 15494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15495] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15494] <... futex resumed>)        = 0
[pid 15494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15495] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15494] <... futex resumed>)        = 0
[pid 15494] exit_group(0)               = ?
[pid 15495] +++ exited with 0 +++
[pid 15494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15496 attached
 <unfinished ...>
[pid 15496] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15496] setpgid(0, 0)               = 0
[pid 15496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15496] write(3, "1000", 4)         = 4
[pid 15496] close(3)                    = 0
executing program
[pid 15496] write(1, "executing program\n", 18) = 18
[pid 15496] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15496] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15496] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15496] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15496
[pid 15496] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15496] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15497 attached
 => {parent_tid=[15497]}, 88) = 15497
[pid 15496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15497] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15497] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15497] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15496] <... futex resumed>)        = 0
[pid 15496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15497] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15496] <... futex resumed>)        = 0
[pid 15496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15497] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15496] <... futex resumed>)        = 0
[pid 15496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15497] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15496] <... futex resumed>)        = 0
[pid 15496] exit_group(0)               = ?
[pid 15497] +++ exited with 0 +++
[pid 15496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15498 attached
, child_tidptr=0x55557060c690) = 15498
[pid 15498] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15498] setpgid(0, 0)               = 0
[pid 15498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15498] write(3, "1000", 4)         = 4
[pid 15498] close(3)                    = 0
[pid 15498] write(1, "executing program\n", 18) = 18
[pid 15498] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15498] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15498] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15498] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15498] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15498] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15498] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15499 attached
 => {parent_tid=[15499]}, 88) = 15499
[pid 15499] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15498] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15499] <... futex resumed>)        = 0
[pid 15499] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15499] <... futex resumed>)        = 0
[pid 15499] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15499] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15498] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15499] <... futex resumed>)        = 0
[pid 15499] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15499] <... futex resumed>)        = 0
[pid 15499] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15499] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15498] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15498] exit_group(0)               = ?
[pid 15499] <... futex resumed>)        = ?
[pid 15499] +++ exited with 0 +++
[pid 15498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15500
./strace-static-x86_64: Process 15500 attached
[pid 15500] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15500] setpgid(0, 0)               = 0
[pid 15500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15500] write(3, "1000", 4)         = 4
[pid 15500] close(3executing program
)                    = 0
[pid 15500] write(1, "executing program\n", 18) = 18
[pid 15500] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15500] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15500] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15500] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15501 attached
 <unfinished ...>
[pid 15501] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15501] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15500] <... clone3 resumed> => {parent_tid=[15501]}, 88) = 15501
[pid 15500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15501] <... futex resumed>)        = 0
[pid 15501] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15501] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15501] <... futex resumed>)        = 0
[pid 15500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15501] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15501] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15500] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15501] <... futex resumed>)        = 0
[pid 15501] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15501] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15500] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15501] <... futex resumed>)        = 0
[pid 15501] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15501] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15501] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15500] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15500] exit_group(0)               = ?
[pid 15501] <... futex resumed>)        = ?
[pid 15501] +++ exited with 0 +++
[pid 15500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15502 attached
, child_tidptr=0x55557060c690) = 15502
[pid 15502] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15502] setpgid(0, 0)               = 0
[pid 15502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15502] write(3, "1000", 4)         = 4
[pid 15502] close(3)                    = 0
executing program
[pid 15502] write(1, "executing program\n", 18) = 18
[pid 15502] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15502] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15502] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15502] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15503 attached
 => {parent_tid=[15503]}, 88) = 15503
[pid 15503] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15503] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15503] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15503] <... futex resumed>)        = 0
[pid 15503] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15503] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15503] <... futex resumed>)        = 0
[pid 15502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15503] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15503] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15502] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15503] <... futex resumed>)        = 0
[pid 15502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15503] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15503] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15502] <... futex resumed>)        = 0
[pid 15503] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15503] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15502] <... futex resumed>)        = 0
[pid 15503] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15502] exit_group(0)               = ?
[pid 15503] <... futex resumed>)        = ?
[pid 15503] +++ exited with 0 +++
[pid 15502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15504
./strace-static-x86_64: Process 15504 attached
[pid 15504] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15504] setpgid(0, 0)               = 0
[pid 15504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15504] write(3, "1000", 4)         = 4
[pid 15504] close(3)                    = 0
[pid 15504] write(1, "executing program\n", 18executing program
) = 18
[pid 15504] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15504] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15504] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15504] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15505]}, 88) = 15505
[pid 15504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15505 attached
 <unfinished ...>
[pid 15505] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15505] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15504] <... futex resumed>)        = 0
[pid 15504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15505] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15504] <... futex resumed>)        = 0
[pid 15504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15505] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15504] <... futex resumed>)        = 0
[pid 15504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15505] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15504] <... futex resumed>)        = 0
[pid 15504] exit_group(0)               = ?
[pid 15505] +++ exited with 0 +++
[pid 15504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15506 attached
 <unfinished ...>
[pid 15506] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15506
[pid 15506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15506] setpgid(0, 0)               = 0
[pid 15506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15506] write(3, "1000", 4)         = 4
[pid 15506] close(3)                    = 0
[pid 15506] write(1, "executing program\n", 18executing program
) = 18
[pid 15506] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15506] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15506] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15506] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15506] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15506] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15507]}, 88) = 15507
[pid 15506] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15507 attached
 <unfinished ...>
[pid 15507] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15507] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15507] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15506] <... futex resumed>)        = 0
[pid 15506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15507] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15506] <... futex resumed>)        = 0
[pid 15506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15507] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15506] <... futex resumed>)        = 0
[pid 15506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15507] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15506] <... futex resumed>)        = 0
[pid 15507] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15506] exit_group(0)               = ?
[pid 15507] <... futex resumed>)        = ?
[pid 15507] +++ exited with 0 +++
[pid 15506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15508 attached
 <unfinished ...>
[pid 15508] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15508
[pid 15508] setpgid(0, 0)               = 0
[pid 15508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15508] write(3, "1000", 4)         = 4
[pid 15508] close(3)                    = 0
[pid 15508] write(1, "executing program\n", 18executing program
) = 18
[pid 15508] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15508] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15508] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15508] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15509]}, 88) = 15509
[pid 15508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15509 attached
 <unfinished ...>
[pid 15509] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15509] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15508] <... futex resumed>)        = 0
[pid 15508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15509] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15508] <... futex resumed>)        = 0
[pid 15508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15509] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15508] <... futex resumed>)        = 0
[pid 15508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15508] <... futex resumed>)        = 0
[pid 15508] exit_group(0)               = ?
[pid 15509] +++ exited with 0 +++
[pid 15508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15510
./strace-static-x86_64: Process 15510 attached
[pid 15510] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15510] setpgid(0, 0)               = 0
[pid 15510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15510] write(3, "1000", 4)         = 4
[pid 15510] close(3)                    = 0
[pid 15510] write(1, "executing program\n", 18executing program
) = 18
[pid 15510] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15510] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15510] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15510] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15511 attached
 => {parent_tid=[15511]}, 88) = 15511
[pid 15510] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15511] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15510] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15511] <... set_robust_list resumed>) = 0
[pid 15511] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15510] <... futex resumed>)        = 0
[pid 15511] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15511] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15510] <... futex resumed>)        = 0
[pid 15511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15511] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15510] <... futex resumed>)        = 0
[pid 15510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15510] <... futex resumed>)        = 0
[pid 15510] exit_group(0)               = ?
[pid 15511] +++ exited with 0 +++
[pid 15510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15512 attached
 <unfinished ...>
[pid 15512] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15512
[pid 15512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15512] setpgid(0, 0)               = 0
[pid 15512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15512] write(3, "1000", 4)         = 4
[pid 15512] close(3)                    = 0
[pid 15512] write(1, "executing program\n", 18executing program
) = 18
[pid 15512] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15512] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15512] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15512] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15512] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15512] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15513]}, 88) = 15513
[pid 15512] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15513 attached
 <unfinished ...>
[pid 15513] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15512] <... futex resumed>)        = 0
[pid 15513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15513] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15512] <... futex resumed>)        = 0
[pid 15512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15512] <... futex resumed>)        = 0
[pid 15513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15513] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15513] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15512] <... futex resumed>)        = 0
[pid 15512] exit_group(0)               = ?
[pid 15513] +++ exited with 0 +++
[pid 15512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15514
./strace-static-x86_64: Process 15514 attached
[pid 15514] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15514] setpgid(0, 0)               = 0
[pid 15514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 15514] write(3, "1000", 4)         = 4
[pid 15514] close(3)                    = 0
[pid 15514] write(1, "executing program\n", 18) = 18
[pid 15514] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15514] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15514] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15515]}, 88) = 15515
[pid 15514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 15515 attached
[pid 15514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15515] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15514] <... futex resumed>)        = 0
[pid 15514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15514] <... futex resumed>)        = 0
[pid 15514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15514] <... futex resumed>)        = 0
[pid 15514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15515] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15514] <... futex resumed>)        = 0
[pid 15514] exit_group(0)               = ?
[pid 15515] +++ exited with 0 +++
[pid 15514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15516 attached
 <unfinished ...>
[pid 15516] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15516] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15516
[pid 15516] <... setpgid resumed>)      = 0
[pid 15516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15516] write(3, "1000", 4)         = 4
[pid 15516] close(3)                    = 0
[pid 15516] write(1, "executing program\n", 18executing program
) = 18
[pid 15516] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15516] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15516] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15517 attached
 => {parent_tid=[15517]}, 88) = 15517
[pid 15517] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15517] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15517] <... futex resumed>)        = 0
[pid 15517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15517] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15517] <... futex resumed>)        = 0
[pid 15517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15517] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15517] <... futex resumed>)        = 0
[pid 15517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15517] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15517] <... futex resumed>)        = 0
[pid 15517] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15517] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15517] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15516] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15516] exit_group(0)               = ?
[pid 15517] <... futex resumed>)        = ?
[pid 15517] +++ exited with 0 +++
[pid 15516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15518
./strace-static-x86_64: Process 15518 attached
[pid 15518] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15518] setpgid(0, 0)               = 0
[pid 15518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15518] write(3, "1000", 4)         = 4
[pid 15518] close(3)                    = 0
[pid 15518] write(1, "executing program\n", 18executing program
) = 18
[pid 15518] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15518] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15518] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15518] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15518] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15518] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15519 attached
 => {parent_tid=[15519]}, 88) = 15519
[pid 15519] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15519] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15519] <... futex resumed>)        = 0
[pid 15518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15518] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15519] <... futex resumed>)        = 0
[pid 15519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15519] <... futex resumed>)        = 0
[pid 15518] <... futex resumed>)        = 1
[pid 15519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15519] <... futex resumed>)        = 0
[pid 15518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15519] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15518] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15518] exit_group(0)               = ?
[pid 15519] <... futex resumed>)        = ?
[pid 15519] +++ exited with 0 +++
[pid 15518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15520
./strace-static-x86_64: Process 15520 attached
[pid 15520] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15520] setpgid(0, 0)               = 0
[pid 15520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15520] write(3, "1000", 4)         = 4
[pid 15520] close(3)                    = 0
[pid 15520] write(1, "executing program\n", 18executing program
) = 18
[pid 15520] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15520] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15520] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15521 attached
 <unfinished ...>
[pid 15521] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15521] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15520] <... clone3 resumed> => {parent_tid=[15521]}, 88) = 15521
[pid 15520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15521] <... futex resumed>)        = 0
[pid 15520] <... futex resumed>)        = 1
[pid 15521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15521] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15521] <... futex resumed>)        = 0
[pid 15520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15521] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15520] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15521] <... futex resumed>)        = 0
[pid 15520] <... futex resumed>)        = 1
[pid 15521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15521] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15521] <... futex resumed>)        = 0
[pid 15520] <... futex resumed>)        = 1
[pid 15521] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15521] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15521] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15520] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15520] exit_group(0)               = ?
[pid 15521] <... futex resumed>)        = ?
[pid 15521] +++ exited with 0 +++
[pid 15520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15522
./strace-static-x86_64: Process 15522 attached
[pid 15522] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15522] setpgid(0, 0)               = 0
[pid 15522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15522] write(3, "1000", 4)         = 4
[pid 15522] close(3)                    = 0
[pid 15522] write(1, "executing program\n", 18executing program
) = 18
[pid 15522] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15522] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15522] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15522] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15522] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15522] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15522] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15523 attached
 => {parent_tid=[15523]}, 88) = 15523
[pid 15523] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15522] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15523] <... futex resumed>)        = 0
[pid 15522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15522] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15523] <... futex resumed>)        = 0
[pid 15523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15523] <... futex resumed>)        = 0
[pid 15523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15522] <... futex resumed>)        = 1
[pid 15523] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15523] <... futex resumed>)        = 0
[pid 15523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15522] exit_group(0)               = ?
[pid 15523] <... futex resumed>)        = ?
[pid 15523] +++ exited with 0 +++
[pid 15522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15524
./strace-static-x86_64: Process 15524 attached
[pid 15524] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15524] setpgid(0, 0)               = 0
[pid 15524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15524] write(3, "1000", 4)         = 4
[pid 15524] close(3executing program
)                    = 0
[pid 15524] write(1, "executing program\n", 18) = 18
[pid 15524] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15524] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15524] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15524] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15525 attached
 <unfinished ...>
[pid 15525] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15524] <... clone3 resumed> => {parent_tid=[15525]}, 88) = 15525
[pid 15524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15525] <... futex resumed>)        = 0
[pid 15525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15525] <... futex resumed>)        = 0
[pid 15524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15524] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15525] <... futex resumed>)        = 0
[pid 15524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15524] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15525] <... futex resumed>)        = 0
[pid 15525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15524] exit_group(0)               = ?
[pid 15525] <... futex resumed>)        = ?
[pid 15525] +++ exited with 0 +++
[pid 15524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15526
./strace-static-x86_64: Process 15526 attached
[pid 15526] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15526] setpgid(0, 0)               = 0
[pid 15526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15526] write(3, "1000", 4)         = 4
[pid 15526] close(3executing program
)                    = 0
[pid 15526] write(1, "executing program\n", 18) = 18
[pid 15526] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15526] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15526] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15526] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15527 attached
 <unfinished ...>
[pid 15527] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15526] <... clone3 resumed> => {parent_tid=[15527]}, 88) = 15527
[pid 15526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15527] <... futex resumed>)        = 0
[pid 15527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15527] <... futex resumed>)        = 0
[pid 15526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15527] <... futex resumed>)        = 0
[pid 15526] <... futex resumed>)        = 1
[pid 15527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15527] <... futex resumed>)        = 0
[pid 15526] <... futex resumed>)        = 1
[pid 15526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15526] <... futex resumed>)        = 0
[pid 15526] exit_group(0)               = ?
[pid 15527] <... futex resumed>)        = ?
[pid 15527] +++ exited with 0 +++
[pid 15526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15528 attached
, child_tidptr=0x55557060c690) = 15528
[pid 15528] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15528] setpgid(0, 0)               = 0
[pid 15528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15528] write(3, "1000", 4)         = 4
[pid 15528] close(3)                    = 0
[pid 15528] write(1, "executing program\n", 18executing program
) = 18
[pid 15528] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15528] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15528] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15528] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15528] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15528] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15529]}, 88) = 15529
[pid 15528] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15529 attached
 <unfinished ...>
[pid 15529] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15528] <... futex resumed>)        = 0
[pid 15528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15528] <... futex resumed>)        = 0
[pid 15528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15528] <... futex resumed>)        = 0
[pid 15528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15528] <... futex resumed>)        = 0
[pid 15528] exit_group(0)               = ?
[pid 15529] +++ exited with 0 +++
[pid 15528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15530
./strace-static-x86_64: Process 15530 attached
[pid 15530] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15530] setpgid(0, 0)               = 0
[pid 15530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15530] write(3, "1000", 4)         = 4
[pid 15530] close(3)                    = 0
[pid 15530] write(1, "executing program\n", 18executing program
) = 18
[pid 15530] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15530] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15530] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15531 attached
 => {parent_tid=[15531]}, 88) = 15531
[pid 15531] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15531] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15530] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15531] <... futex resumed>)        = 0
[pid 15531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15531] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15531] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15530] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15531] <... futex resumed>)        = 0
[pid 15531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15531] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15531] <... futex resumed>)        = 0
[pid 15531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15531] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15531] <... futex resumed>)        = 0
[pid 15531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15531] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15530] exit_group(0)               = ?
[pid 15531] <... futex resumed>)        = ?
[pid 15531] +++ exited with 0 +++
[pid 15530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15532
./strace-static-x86_64: Process 15532 attached
[pid 15532] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15532] setpgid(0, 0)               = 0
[pid 15532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15532] write(3, "1000", 4)         = 4
[pid 15532] close(3)                    = 0
[pid 15532] write(1, "executing program\n", 18executing program
) = 18
[pid 15532] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15532] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15532] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15533 attached
 => {parent_tid=[15533]}, 88) = 15533
[pid 15532] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15533] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15533] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15532] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15533] <... futex resumed>)        = 0
[pid 15533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15533] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15533] <... futex resumed>)        = 0
[pid 15533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15533] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15533] <... futex resumed>)        = 0
[pid 15533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15533] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15533] <... futex resumed>)        = 0
[pid 15533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15533] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15532] exit_group(0)               = ?
[pid 15533] <... futex resumed>)        = ?
[pid 15533] +++ exited with 0 +++
[pid 15532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15534
./strace-static-x86_64: Process 15534 attached
[pid 15534] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15534] setpgid(0, 0)               = 0
[pid 15534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15534] write(3, "1000", 4)         = 4
[pid 15534] close(3)                    = 0
[pid 15534] write(1, "executing program\n", 18executing program
) = 18
[pid 15534] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15534] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15534] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15534] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15535]}, 88) = 15535
[pid 15534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15535 attached
 <unfinished ...>
[pid 15535] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15534] <... futex resumed>)        = 0
[pid 15534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15535] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15534] <... futex resumed>)        = 0
[pid 15534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15534] <... futex resumed>)        = 0
[pid 15534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15535] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15534] <... futex resumed>)        = 0
[pid 15534] exit_group(0)               = ?
[pid 15535] +++ exited with 0 +++
[pid 15534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15536 attached
 <unfinished ...>
[pid 15536] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15536] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15536
[pid 15536] <... setpgid resumed>)      = 0
[pid 15536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15536] write(3, "1000", 4)         = 4
[pid 15536] close(3)                    = 0
[pid 15536] write(1, "executing program\n", 18executing program
) = 18
[pid 15536] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15536] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15536] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15536] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15536] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15536] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15537 attached
 => {parent_tid=[15537]}, 88) = 15537
[pid 15537] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15537] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15536] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15537] <... futex resumed>)        = 0
[pid 15536] <... futex resumed>)        = 1
[pid 15537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15537] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15537] <... futex resumed>)        = 0
[pid 15537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15537] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15537] <... futex resumed>)        = 0
[pid 15537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15537] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15537] <... futex resumed>)        = 0
[pid 15536] <... futex resumed>)        = 1
[pid 15537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15537] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15536] exit_group(0 <unfinished ...>
[pid 15537] <... futex resumed>)        = ?
[pid 15537] +++ exited with 0 +++
[pid 15536] <... exit_group resumed>)   = ?
[pid 15536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15538 attached
, child_tidptr=0x55557060c690) = 15538
[pid 15538] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15538] setpgid(0, 0)               = 0
[pid 15538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15538] write(3, "1000", 4)         = 4
[pid 15538] close(3executing program
)                    = 0
[pid 15538] write(1, "executing program\n", 18) = 18
[pid 15538] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15538] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15538] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15539 attached
 => {parent_tid=[15539]}, 88) = 15539
[pid 15539] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15538] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15539] <... futex resumed>)        = 0
[pid 15538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15538] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15539] <... futex resumed>)        = 0
[pid 15538] <... futex resumed>)        = 1
[pid 15539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15539] <... futex resumed>)        = 0
[pid 15538] <... futex resumed>)        = 1
[pid 15539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15539] <... futex resumed>)        = 0
[pid 15538] <... futex resumed>)        = 1
[pid 15538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15538] <... futex resumed>)        = 0
[pid 15539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15538] exit_group(0)               = ?
[pid 15539] <... futex resumed>)        = ?
[pid 15539] +++ exited with 0 +++
[pid 15538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15540
./strace-static-x86_64: Process 15540 attached
[pid 15540] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15540] setpgid(0, 0)               = 0
[pid 15540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15540] write(3, "1000", 4)         = 4
[pid 15540] close(3)                    = 0
executing program
[pid 15540] write(1, "executing program\n", 18) = 18
[pid 15540] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15540] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15540] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15540] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15540] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15540] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15541 attached
 <unfinished ...>
[pid 15541] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15541] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15541] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15540] <... clone3 resumed> => {parent_tid=[15541]}, 88) = 15541
[pid 15540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15541] <... futex resumed>)        = 0
[pid 15540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15541] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15540] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15541] <... futex resumed>)        = 0
[pid 15541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15541] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15541] <... futex resumed>)        = 0
[pid 15541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15541] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15541] <... futex resumed>)        = 0
[pid 15540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15541] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15541] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15540] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15540] exit_group(0)               = ?
[pid 15541] <... futex resumed>)        = ?
[pid 15541] +++ exited with 0 +++
[pid 15540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15542
./strace-static-x86_64: Process 15542 attached
[pid 15542] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15542] setpgid(0, 0)               = 0
[pid 15542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15542] write(3, "1000", 4)         = 4
[pid 15542] close(3executing program
)                    = 0
[pid 15542] write(1, "executing program\n", 18) = 18
[pid 15542] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15542] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15542] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15542] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15542] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15542] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15543 attached
 => {parent_tid=[15543]}, 88) = 15543
[pid 15543] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15543] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15542] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15543] <... futex resumed>)        = 0
[pid 15543] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15543] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15542] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15543] <... futex resumed>)        = 0
[pid 15543] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15543] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15542] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15543] <... futex resumed>)        = 0
[pid 15543] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15543] <... futex resumed>)        = 0
[pid 15543] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15542] exit_group(0)               = ?
[pid 15543] <... futex resumed>)        = ?
[pid 15543] +++ exited with 0 +++
[pid 15542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15544
./strace-static-x86_64: Process 15544 attached
[pid 15544] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15544] setpgid(0, 0)               = 0
[pid 15544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15544] write(3, "1000", 4)         = 4
[pid 15544] close(3)                    = 0
executing program
[pid 15544] write(1, "executing program\n", 18) = 18
[pid 15544] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15544] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15544] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15545 attached
 <unfinished ...>
[pid 15545] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15544] <... clone3 resumed> => {parent_tid=[15545]}, 88) = 15545
[pid 15544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15545] <... futex resumed>)        = 0
[pid 15545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15545] <... futex resumed>)        = 0
[pid 15544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15545] <... futex resumed>)        = 0
[pid 15544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15545] <... futex resumed>)        = 0
[pid 15544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15545] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15544] <... futex resumed>)        = 0
[pid 15544] exit_group(0)               = ?
[pid 15545] <... futex resumed>)        = ?
[pid 15545] +++ exited with 0 +++
[pid 15544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15546 attached
, child_tidptr=0x55557060c690) = 15546
[pid 15546] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15546] setpgid(0, 0)               = 0
[pid 15546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15546] write(3, "1000", 4)         = 4
[pid 15546] close(3executing program
)                    = 0
[pid 15546] write(1, "executing program\n", 18) = 18
[pid 15546] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15546] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15546] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15546] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15547 attached
 <unfinished ...>
[pid 15547] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15546] <... clone3 resumed> => {parent_tid=[15547]}, 88) = 15547
[pid 15546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15547] <... futex resumed>)        = 0
[pid 15547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15547] <... futex resumed>)        = 0
[pid 15546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15547] <... futex resumed>)        = 0
[pid 15547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15547] <... futex resumed>)        = 0
[pid 15546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15546] <... futex resumed>)        = 0
[pid 15547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15546] exit_group(0)               = ?
[pid 15547] <... futex resumed>)        = ?
[pid 15547] +++ exited with 0 +++
[pid 15546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15548
./strace-static-x86_64: Process 15548 attached
[pid 15548] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15548] setpgid(0, 0)               = 0
[pid 15548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15548] write(3, "1000", 4)         = 4
[pid 15548] close(3)                    = 0
[pid 15548] write(1, "executing program\n", 18executing program
) = 18
[pid 15548] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15548] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15548] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15548] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15549]}, 88) = 15549
[pid 15548] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15549 attached
 <unfinished ...>
[pid 15549] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15548] <... futex resumed>)        = 0
[pid 15548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15548] <... futex resumed>)        = 0
[pid 15548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15548] <... futex resumed>)        = 0
[pid 15549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15549] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15549] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15548] <... futex resumed>)        = 0
[pid 15548] exit_group(0)               = ?
[pid 15549] +++ exited with 0 +++
[pid 15548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15550
./strace-static-x86_64: Process 15550 attached
[pid 15550] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15550] setpgid(0, 0)               = 0
[pid 15550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15550] write(3, "1000", 4)         = 4
[pid 15550] close(3)                    = 0
[pid 15550] write(1, "executing program\n", 18executing program
) = 18
[pid 15550] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15550] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15550] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15551 attached
 => {parent_tid=[15551]}, 88) = 15551
[pid 15551] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15551] <... futex resumed>)        = 0
[pid 15551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15550] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15551] <... futex resumed>)        = 0
[pid 15551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15550] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15551] <... futex resumed>)        = 0
[pid 15551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15551] <... futex resumed>)        = 0
[pid 15551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15550] exit_group(0)               = ?
[pid 15551] <... futex resumed>)        = ?
[pid 15551] +++ exited with 0 +++
[pid 15550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15552 attached
, child_tidptr=0x55557060c690) = 15552
[pid 15552] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15552] setpgid(0, 0)               = 0
[pid 15552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15552] write(3, "1000", 4)         = 4
[pid 15552] close(3)                    = 0
[pid 15552] write(1, "executing program\n", 18executing program
) = 18
[pid 15552] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15552] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15552] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15552] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15553]}, 88) = 15553
[pid 15552] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15553 attached
 <unfinished ...>
[pid 15553] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15552] <... futex resumed>)        = 0
[pid 15552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15552] <... futex resumed>)        = 0
[pid 15552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15552] <... futex resumed>)        = 0
[pid 15552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15553] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15552] <... futex resumed>)        = 0
[pid 15552] exit_group(0)               = ?
[pid 15553] +++ exited with 0 +++
[pid 15552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15554
./strace-static-x86_64: Process 15554 attached
[pid 15554] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15554] setpgid(0, 0)               = 0
[pid 15554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15554] write(3, "1000", 4)         = 4
[pid 15554] close(3)                    = 0
[pid 15554] write(1, "executing program\n", 18executing program
) = 18
[pid 15554] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15554] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15554] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15554] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15554] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15554] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15555 attached
 <unfinished ...>
[pid 15555] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15555] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15554] <... clone3 resumed> => {parent_tid=[15555]}, 88) = 15555
[pid 15554] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15555] <... futex resumed>)        = 0
[pid 15555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15555] <... futex resumed>)        = 0
[pid 15555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15555] <... futex resumed>)        = 0
[pid 15554] <... futex resumed>)        = 1
[pid 15555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15555] <... futex resumed>)        = 0
[pid 15554] <... futex resumed>)        = 1
[pid 15555] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15555] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15554] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15554] exit_group(0)               = ?
[pid 15555] <... futex resumed>)        = ?
[pid 15555] +++ exited with 0 +++
[pid 15554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15556 attached
, child_tidptr=0x55557060c690) = 15556
[pid 15556] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15556] setpgid(0, 0)               = 0
[pid 15556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15556] write(3, "1000", 4)         = 4
[pid 15556] close(3)                    = 0
executing program
[pid 15556] write(1, "executing program\n", 18) = 18
[pid 15556] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15556] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15556] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15556] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15557 attached
 => {parent_tid=[15557]}, 88) = 15557
[pid 15557] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15557] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15557] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15556] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15557] <... futex resumed>)        = 0
[pid 15557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15557] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15557] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15556] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15557] <... futex resumed>)        = 0
[pid 15556] <... futex resumed>)        = 1
[pid 15557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15557] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15557] <... futex resumed>)        = 0
[pid 15556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15556] <... futex resumed>)        = 0
[pid 15556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15556] <... futex resumed>)        = 0
[pid 15557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15557] <... futex resumed>)        = 0
[pid 15556] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15557] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15556] exit_group(0)               = ?
[pid 15557] <... futex resumed>)        = ?
[pid 15557] +++ exited with 0 +++
[pid 15556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15558
./strace-static-x86_64: Process 15558 attached
[pid 15558] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15558] setpgid(0, 0)               = 0
[pid 15558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15558] write(3, "1000", 4)         = 4
[pid 15558] close(3)                    = 0
[pid 15558] write(1, "executing program\n", 18executing program
) = 18
[pid 15558] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15558] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15558] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15558] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15559 attached
 => {parent_tid=[15559]}, 88) = 15559
[pid 15559] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15558] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15559] <... futex resumed>)        = 0
[pid 15558] <... futex resumed>)        = 1
[pid 15559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15559] <... futex resumed>)        = 0
[pid 15558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15558] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15559] <... futex resumed>)        = 0
[pid 15559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15559] <... futex resumed>)        = 0
[pid 15558] <... futex resumed>)        = 1
[pid 15559] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15559] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15558] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15558] exit_group(0)               = ?
[pid 15559] <... futex resumed>)        = ?
[pid 15559] +++ exited with 0 +++
[pid 15558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15560 attached
, child_tidptr=0x55557060c690) = 15560
[pid 15560] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15560] setpgid(0, 0)               = 0
[pid 15560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15560] write(3, "1000", 4)         = 4
[pid 15560] close(3executing program
)                    = 0
[pid 15560] write(1, "executing program\n", 18) = 18
[pid 15560] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15560] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15560] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15560] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15561 attached
 => {parent_tid=[15561]}, 88) = 15561
[pid 15561] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15561] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15560] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15561] <... futex resumed>)        = 0
[pid 15560] <... futex resumed>)        = 1
[pid 15561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15561] <... futex resumed>)        = 0
[pid 15560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15561] <... futex resumed>)        = 0
[pid 15561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15560] <... futex resumed>)        = 1
[pid 15561] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15561] <... futex resumed>)        = 0
[pid 15560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15561] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15560] exit_group(0)               = ?
[pid 15561] <... futex resumed>)        = ?
[pid 15561] +++ exited with 0 +++
[pid 15560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15562 attached
, child_tidptr=0x55557060c690) = 15562
[pid 15562] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15562] setpgid(0, 0)               = 0
[pid 15562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15562] write(3, "1000", 4)         = 4
[pid 15562] close(3)                    = 0
executing program
[pid 15562] write(1, "executing program\n", 18) = 18
[pid 15562] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15562] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15562] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15563 attached
 => {parent_tid=[15563]}, 88) = 15563
[pid 15563] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15563] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15563] <... futex resumed>)        = 0
[pid 15563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15563] <... futex resumed>)        = 0
[pid 15563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15563] <... futex resumed>)        = 0
[pid 15562] <... futex resumed>)        = 1
[pid 15563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15563] <... futex resumed>)        = 0
[pid 15562] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15563] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15562] <... futex resumed>)        = 0
[pid 15563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15562] exit_group(0)               = ?
[pid 15563] <... futex resumed>)        = ?
[pid 15563] +++ exited with 0 +++
[pid 15562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15564 attached
, child_tidptr=0x55557060c690) = 15564
[pid 15564] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15564] setpgid(0, 0)               = 0
[pid 15564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15564] write(3, "1000", 4)         = 4
[pid 15564] close(3)                    = 0
executing program
[pid 15564] write(1, "executing program\n", 18) = 18
[pid 15564] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15564] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15564] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15564] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15564] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15564] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15565 attached
 <unfinished ...>
[pid 15565] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15565] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15564] <... clone3 resumed> => {parent_tid=[15565]}, 88) = 15565
[pid 15564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15565] <... futex resumed>)        = 0
[pid 15564] <... futex resumed>)        = 1
[pid 15565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15565] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15565] <... futex resumed>)        = 0
[pid 15564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program
 <unfinished ...>
[pid 15565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15565] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15565] <... futex resumed>)        = 0
[pid 15564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15565] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15565] <... futex resumed>)        = 0
[pid 15564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15565] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15564] <... futex resumed>)        = 0
[pid 15565] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15564] exit_group(0)               = ?
[pid 15565] <... futex resumed>)        = ?
[pid 15565] +++ exited with 0 +++
[pid 15564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15566
./strace-static-x86_64: Process 15566 attached
[pid 15566] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15566] setpgid(0, 0)               = 0
[pid 15566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15566] write(3, "1000", 4)         = 4
[pid 15566] close(3)                    = 0
[pid 15566] write(1, "executing program\n", 18) = 18
[pid 15566] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15566] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15566] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15566] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15567 attached
 => {parent_tid=[15567]}, 88) = 15567
[pid 15566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15567] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15567] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15566] <... futex resumed>)        = 0
[pid 15566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15566] <... futex resumed>)        = 0
[pid 15566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15567] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15566] <... futex resumed>)        = 0
[pid 15566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15566] <... futex resumed>)        = 0
[pid 15566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15567] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15566] <... futex resumed>)        = 0
[pid 15566] exit_group(0)               = ?
[pid 15567] +++ exited with 0 +++
[pid 15566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15568 attached
 <unfinished ...>
[pid 15568] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15568] setpgid(0, 0)               = 0
[pid 15568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15568
[pid 15568] <... openat resumed>)       = 3
[pid 15568] write(3, "1000", 4)         = 4
[pid 15568] close(3executing program
)                    = 0
[pid 15568] write(1, "executing program\n", 18) = 18
[pid 15568] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15568] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15568] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15568] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15569 attached
 => {parent_tid=[15569]}, 88) = 15569
[pid 15569] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15569] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15568] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15569] <... futex resumed>)        = 0
[pid 15569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15569] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15569] <... futex resumed>)        = 0
[pid 15569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15569] <... futex resumed>)        = 0
[pid 15569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15569] <... futex resumed>)        = 0
[pid 15569] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15568] exit_group(0)               = ?
[pid 15569] <... futex resumed>)        = ?
[pid 15569] +++ exited with 0 +++
[pid 15568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15570 attached
, child_tidptr=0x55557060c690) = 15570
[pid 15570] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15570] setpgid(0, 0)               = 0
[pid 15570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15570] write(3, "1000", 4)         = 4
[pid 15570] close(3)                    = 0
[pid 15570] write(1, "executing program\n", 18executing program
) = 18
[pid 15570] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15570] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15570] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15570] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15570] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15570] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15571]}, 88) = 15571
./strace-static-x86_64: Process 15571 attached
[pid 15570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15571] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15571] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15570] <... futex resumed>)        = 0
[pid 15570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15570] <... futex resumed>)        = 0
[pid 15570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15570] <... futex resumed>)        = 0
[pid 15570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15571] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15570] <... futex resumed>)        = 0
[pid 15570] exit_group(0)               = ?
[pid 15571] +++ exited with 0 +++
[pid 15570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15572
./strace-static-x86_64: Process 15572 attached
[pid 15572] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15572] setpgid(0, 0)               = 0
[pid 15572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15572] write(3, "1000", 4)         = 4
[pid 15572] close(3)                    = 0
[pid 15572] write(1, "executing program\n", 18executing program
) = 18
[pid 15572] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15572] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15572] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15572] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15573 attached
 => {parent_tid=[15573]}, 88) = 15573
[pid 15573] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15573] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15572] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15573] <... futex resumed>)        = 0
[pid 15573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15573] <... futex resumed>)        = 0
[pid 15573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15573] <... futex resumed>)        = 0
[pid 15573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15573] <... futex resumed>)        = 0
[pid 15573] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15572] exit_group(0)               = ?
[pid 15573] <... futex resumed>)        = ?
[pid 15573] +++ exited with 0 +++
[pid 15572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15574
./strace-static-x86_64: Process 15574 attached
[pid 15574] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15574] setpgid(0, 0)               = 0
[pid 15574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15574] write(3, "1000", 4)         = 4
[pid 15574] close(3)                    = 0
[pid 15574] write(1, "executing program\n", 18executing program
) = 18
[pid 15574] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15574] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15574] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15574] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15575]}, 88) = 15575
[pid 15574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15575 attached
 <unfinished ...>
[pid 15575] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15574] <... futex resumed>)        = 0
[pid 15574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15574] <... futex resumed>)        = 0
[pid 15574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15574] <... futex resumed>)        = 0
[pid 15574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15575] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15574] <... futex resumed>)        = 0
[pid 15574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15575] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15574] <... futex resumed>)        = 0
[pid 15574] exit_group(0)               = ?
[pid 15575] +++ exited with 0 +++
[pid 15574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15576
./strace-static-x86_64: Process 15576 attached
[pid 15576] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15576] setpgid(0, 0)               = 0
[pid 15576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15576] write(3, "1000", 4)         = 4
[pid 15576] close(3)                    = 0
[pid 15576] write(1, "executing program\n", 18executing program
) = 18
[pid 15576] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15576] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15576] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15576] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15577 attached
 => {parent_tid=[15577]}, 88) = 15577
[pid 15577] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15576] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15577] <... futex resumed>)        = 0
[pid 15577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15577] <... futex resumed>)        = 0
[pid 15577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15577] <... futex resumed>)        = 0
[pid 15577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15577] <... futex resumed>)        = 0
[pid 15577] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15576] exit_group(0)               = ?
[pid 15577] <... futex resumed>)        = ?
[pid 15577] +++ exited with 0 +++
[pid 15576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15578
./strace-static-x86_64: Process 15578 attached
[pid 15578] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15578] setpgid(0, 0)               = 0
[pid 15578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15578] write(3, "1000", 4)         = 4
[pid 15578] close(3)                    = 0
[pid 15578] write(1, "executing program\n", 18executing program
) = 18
[pid 15578] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15578] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15578] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15578] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15579 attached
 => {parent_tid=[15579]}, 88) = 15579
[pid 15579] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15579] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15578] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15579] <... futex resumed>)        = 0
[pid 15579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15579] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15579] <... futex resumed>)        = 0
[pid 15579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15579] <... futex resumed>)        = 0
[pid 15579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15579] <... futex resumed>)        = 0
[pid 15578] <... futex resumed>)        = 1
[pid 15579] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15578] exit_group(0)               = ?
[pid 15579] <... futex resumed>)        = ?
[pid 15579] +++ exited with 0 +++
[pid 15578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15580
./strace-static-x86_64: Process 15580 attached
[pid 15580] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15580] setpgid(0, 0)               = 0
[pid 15580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15580] write(3, "1000", 4)         = 4
[pid 15580] close(3)                    = 0
[pid 15580] write(1, "executing program\n", 18executing program
) = 18
[pid 15580] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15580] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15580] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15581 attached
 => {parent_tid=[15581]}, 88) = 15581
[pid 15581] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15581] <... futex resumed>)        = 0
[pid 15580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15581] <... futex resumed>)        = 0
[pid 15580] <... futex resumed>)        = 1
[pid 15581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15581] <... futex resumed>)        = 0
[pid 15581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15581] <... futex resumed>)        = 0
[pid 15580] <... futex resumed>)        = 1
[pid 15581] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15581] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15580] exit_group(0)               = ?
[pid 15581] <... futex resumed>)        = ?
[pid 15581] +++ exited with 0 +++
[pid 15580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15582 attached
, child_tidptr=0x55557060c690) = 15582
[pid 15582] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15582] setpgid(0, 0)               = 0
[pid 15582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15582] write(3, "1000", 4)         = 4
[pid 15582] close(3)                    = 0
[pid 15582] write(1, "executing program\n", 18executing program
) = 18
[pid 15582] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15582] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15582] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15582] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15582] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15582] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15583 attached
 => {parent_tid=[15583]}, 88) = 15583
[pid 15583] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15582] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15583] <... futex resumed>)        = 0
[pid 15582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15582] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15583] <... futex resumed>)        = 0
[pid 15583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15583] <... futex resumed>)        = 0
[pid 15583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15583] <... futex resumed>)        = 0
[pid 15582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15582] <... futex resumed>)        = 0
[pid 15583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15582] exit_group(0)               = ?
[pid 15583] <... futex resumed>)        = ?
[pid 15583] +++ exited with 0 +++
[pid 15582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15584 attached
, child_tidptr=0x55557060c690) = 15584
[pid 15584] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15584] setpgid(0, 0)               = 0
[pid 15584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15584] write(3, "1000", 4)         = 4
[pid 15584] close(3)                    = 0
[pid 15584] write(1, "executing program\n", 18executing program
) = 18
[pid 15584] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15584] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15584] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15584] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15584] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15584] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15585]}, 88) = 15585
[pid 15584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15585 attached
 <unfinished ...>
[pid 15585] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15585] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15584] <... futex resumed>)        = 0
[pid 15584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15584] <... futex resumed>)        = 0
[pid 15584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15584] <... futex resumed>)        = 0
[pid 15584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15585] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15584] <... futex resumed>)        = 0
[pid 15584] exit_group(0)               = ?
[pid 15585] +++ exited with 0 +++
[pid 15584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15586 attached
, child_tidptr=0x55557060c690) = 15586
[pid 15586] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15586] setpgid(0, 0)               = 0
[pid 15586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15586] write(3, "1000", 4)         = 4
[pid 15586] close(3)                    = 0
[pid 15586] write(1, "executing program\n", 18executing program
) = 18
[pid 15586] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15586] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15586] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15586] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15587 attached
 => {parent_tid=[15587]}, 88) = 15587
[pid 15587] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15587] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15587] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15587] <... futex resumed>)        = 0
[pid 15587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15587] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15587] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15586] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15587] <... futex resumed>)        = 0
[pid 15587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15587] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15587] <... futex resumed>)        = 0
[pid 15587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15587] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15586] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15587] <... futex resumed>)        = 0
[pid 15587] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15587] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15587] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15586] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15586] exit_group(0)               = ?
[pid 15587] <... futex resumed>)        = ?
[pid 15587] +++ exited with 0 +++
[pid 15586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15588
./strace-static-x86_64: Process 15588 attached
[pid 15588] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15588] setpgid(0, 0)               = 0
[pid 15588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15588] write(3, "1000", 4)         = 4
[pid 15588] close(3)                    = 0
[pid 15588] write(1, "executing program\n", 18executing program
) = 18
[pid 15588] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15588] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15588] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15588] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15589 attached
 => {parent_tid=[15589]}, 88) = 15589
[pid 15589] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15589] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15589] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15589] <... futex resumed>)        = 0
[pid 15589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15589] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15589] <... futex resumed>)        = 0
[pid 15589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15589] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15589] <... futex resumed>)        = 0
[pid 15589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15589] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15589] <... futex resumed>)        = 0
[pid 15589] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15589] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15589] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15588] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15588] exit_group(0)               = ?
[pid 15589] <... futex resumed>)        = ?
[pid 15589] +++ exited with 0 +++
[pid 15588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15590 attached
 <unfinished ...>
[pid 15590] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15590
[pid 15590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15590] setpgid(0, 0)               = 0
[pid 15590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15590] write(3, "1000", 4)         = 4
[pid 15590] close(3executing program
)                    = 0
[pid 15590] write(1, "executing program\n", 18) = 18
[pid 15590] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15590] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15590] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15591 attached
 => {parent_tid=[15591]}, 88) = 15591
[pid 15591] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15591] <... futex resumed>)        = 0
[pid 15591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15590] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15591] <... futex resumed>)        = 0
[pid 15591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15591] <... futex resumed>)        = 0
[pid 15591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15591] <... futex resumed>)        = 0
[pid 15591] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15591] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15590] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15590] exit_group(0)               = ?
[pid 15591] <... futex resumed>)        = ?
[pid 15591] +++ exited with 0 +++
[pid 15590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15592 attached
, child_tidptr=0x55557060c690) = 15592
[pid 15592] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15592] setpgid(0, 0)               = 0
[pid 15592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15592] write(3, "1000", 4)         = 4
[pid 15592] close(3)                    = 0
[pid 15592] write(1, "executing program\n", 18executing program
) = 18
[pid 15592] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15592] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15592] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15592] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15592] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15592] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15593]}, 88) = 15593
[pid 15592] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15593 attached
 <unfinished ...>
[pid 15593] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15593] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15592] <... futex resumed>)        = 0
[pid 15592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15592] <... futex resumed>)        = 0
[pid 15592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15592] <... futex resumed>)        = 0
[pid 15592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15593] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15592] <... futex resumed>)        = 0
[pid 15592] exit_group(0)               = ?
[pid 15593] +++ exited with 0 +++
[pid 15592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15594 attached
, child_tidptr=0x55557060c690) = 15594
[pid 15594] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15594] setpgid(0, 0)               = 0
[pid 15594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15594] write(3, "1000", 4)         = 4
[pid 15594] close(3)                    = 0
[pid 15594] write(1, "executing program\n", 18executing program
) = 18
[pid 15594] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15594] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15594] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15594] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15595 attached
 => {parent_tid=[15595]}, 88) = 15595
[pid 15595] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15595] <... futex resumed>)        = 0
[pid 15595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15595] <... futex resumed>)        = 0
[pid 15595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15594] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15595] <... futex resumed>)        = 0
[pid 15595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15595] <... futex resumed>)        = 0
[pid 15595] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15594] exit_group(0)               = ?
[pid 15595] <... futex resumed>)        = ?
[pid 15595] +++ exited with 0 +++
[pid 15594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15596 attached
, child_tidptr=0x55557060c690) = 15596
[pid 15596] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15596] setpgid(0, 0)               = 0
[pid 15596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15596] write(3, "1000", 4)         = 4
[pid 15596] close(3)                    = 0
executing program
[pid 15596] write(1, "executing program\n", 18) = 18
[pid 15596] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15596] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15596] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15597]}, 88) = 15597
[pid 15596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15597 attached
 <unfinished ...>
[pid 15597] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15596] <... futex resumed>)        = 0
[pid 15596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15596] <... futex resumed>)        = 0
[pid 15596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15596] <... futex resumed>)        = 0
[pid 15596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15597] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15596] <... futex resumed>)        = 0
[pid 15596] exit_group(0)               = ?
[pid 15597] +++ exited with 0 +++
[pid 15596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15598 attached
, child_tidptr=0x55557060c690) = 15598
[pid 15598] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15598] setpgid(0, 0)               = 0
[pid 15598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15598] write(3, "1000", 4)         = 4
[pid 15598] close(3)                    = 0
[pid 15598] write(1, "executing program\n", 18executing program
) = 18
[pid 15598] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15598] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15598] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15598] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15598] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15598] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15599]}, 88) = 15599
[pid 15598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15599 attached
 <unfinished ...>
[pid 15599] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15598] <... futex resumed>)        = 0
[pid 15598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15598] <... futex resumed>)        = 0
[pid 15598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15598] <... futex resumed>)        = 0
[pid 15598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15599] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15598] <... futex resumed>)        = 0
[pid 15598] exit_group(0)               = ?
[pid 15599] +++ exited with 0 +++
[pid 15598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15600 attached
 <unfinished ...>
[pid 15600] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15600] setpgid(0, 0)               = 0
[pid 15600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15600
[pid 15600] write(3, "1000", 4executing program
)         = 4
[pid 15600] close(3)                    = 0
[pid 15600] write(1, "executing program\n", 18) = 18
[pid 15600] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15600] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15600] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15600] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15601]}, 88) = 15601
[pid 15600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15601 attached
 <unfinished ...>
[pid 15601] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15600] <... futex resumed>)        = 0
[pid 15600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15600] <... futex resumed>)        = 0
[pid 15600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15600] <... futex resumed>)        = 0
[pid 15600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15601] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15600] <... futex resumed>)        = 0
[pid 15600] exit_group(0)               = ?
[pid 15601] +++ exited with 0 +++
[pid 15600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15602 attached
 <unfinished ...>
[pid 15602] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15602] setpgid(0, 0)               = 0
[pid 15602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15602] write(3, "1000", 4)         = 4
[pid 15602] close(3executing program
)                    = 0
[pid 15602] write(1, "executing program\n", 18) = 18
[pid 15602] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15602] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15602] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15603]}, 88) = 15603
[pid 15602] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15602
./strace-static-x86_64: Process 15603 attached
[pid 15603] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15602] <... futex resumed>)        = 0
[pid 15602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15602] <... futex resumed>)        = 0
[pid 15602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15602] <... futex resumed>)        = 0
[pid 15602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15603] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15602] <... futex resumed>)        = 0
[pid 15602] exit_group(0)               = ?
[pid 15603] +++ exited with 0 +++
[pid 15602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15604 attached
, child_tidptr=0x55557060c690) = 15604
[pid 15604] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15604] setpgid(0, 0)               = 0
[pid 15604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15604] write(3, "1000", 4)         = 4
[pid 15604] close(3)                    = 0
[pid 15604] write(1, "executing program\n", 18) = 18
executing program
[pid 15604] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15604] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15604] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15604] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15604] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15604] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15605]}, 88) = 15605
[pid 15604] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15605 attached
 <unfinished ...>
[pid 15605] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15604] <... futex resumed>)        = 0
[pid 15604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15604] <... futex resumed>)        = 0
[pid 15604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15604] <... futex resumed>)        = 0
[pid 15604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15605] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15604] <... futex resumed>)        = 0
[pid 15604] exit_group(0)               = ?
[pid 15605] +++ exited with 0 +++
[pid 15604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15606 attached
, child_tidptr=0x55557060c690) = 15606
[pid 15606] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15606] setpgid(0, 0)               = 0
[pid 15606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15606] write(3, "1000", 4)         = 4
[pid 15606] close(3)                    = 0
[pid 15606] write(1, "executing program\n", 18executing program
) = 18
[pid 15606] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15606] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15606] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15606] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15607 attached
 => {parent_tid=[15607]}, 88) = 15607
[pid 15607] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15607] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15607] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15607] <... futex resumed>)        = 0
[pid 15607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15607] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15607] <... futex resumed>)        = 0
[pid 15607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15607] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15607] <... futex resumed>)        = 0
[pid 15607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15607] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15607] <... futex resumed>)        = 0
[pid 15607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15607] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15606] exit_group(0)               = ?
[pid 15607] <... futex resumed>)        = ?
[pid 15607] +++ exited with 0 +++
[pid 15606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15608
./strace-static-x86_64: Process 15608 attached
[pid 15608] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15608] setpgid(0, 0)               = 0
[pid 15608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15608] write(3, "1000", 4)         = 4
[pid 15608] close(3)                    = 0
[pid 15608] write(1, "executing program\n", 18executing program
) = 18
[pid 15608] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15608] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15608] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15609]}, 88) = 15609
[pid 15608] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15609 attached
 <unfinished ...>
[pid 15609] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15608] <... futex resumed>)        = 0
[pid 15608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15608] <... futex resumed>)        = 0
[pid 15608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15608] <... futex resumed>)        = 0
[pid 15608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15608] <... futex resumed>)        = 0
[pid 15608] exit_group(0)               = ?
[pid 15609] +++ exited with 0 +++
[pid 15608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15610 attached
 <unfinished ...>
[pid 15610] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15610] setpgid(0, 0)               = 0
[pid 15610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15610
[pid 15610] <... openat resumed>)       = 3
[pid 15610] write(3, "1000", 4)         = 4
[pid 15610] close(3)                    = 0
executing program
[pid 15610] write(1, "executing program\n", 18) = 18
[pid 15610] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15610] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15610] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15611 attached
 => {parent_tid=[15611]}, 88) = 15611
[pid 15611] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15611] <... futex resumed>)        = 0
[pid 15611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15611] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15611] <... futex resumed>)        = 0
[pid 15611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15611] <... futex resumed>)        = 0
[pid 15611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15611] <... futex resumed>)        = 0
[pid 15610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15611] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15610] exit_group(0)               = ?
[pid 15611] <... futex resumed>)        = ?
[pid 15611] +++ exited with 0 +++
[pid 15610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15612
./strace-static-x86_64: Process 15612 attached
[pid 15612] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15612] setpgid(0, 0)               = 0
[pid 15612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15612] write(3, "1000", 4)         = 4
[pid 15612] close(3)                    = 0
executing program
[pid 15612] write(1, "executing program\n", 18) = 18
[pid 15612] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15612] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15612] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15612] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15612] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15612] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15613]}, 88) = 15613
[pid 15612] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15613 attached
 <unfinished ...>
[pid 15613] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15613] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15612] <... futex resumed>)        = 0
[pid 15612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15612] <... futex resumed>)        = 0
[pid 15612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15612] <... futex resumed>)        = 0
[pid 15612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15613] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15612] <... futex resumed>)        = 0
[pid 15612] exit_group(0)               = ?
[pid 15613] +++ exited with 0 +++
[pid 15612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15614 attached
 <unfinished ...>
[pid 15614] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15614] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15614
[pid 15614] <... prctl resumed>)        = 0
[pid 15614] setpgid(0, 0)               = 0
[pid 15614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15614] write(3, "1000", 4)         = 4
[pid 15614] close(3)                    = 0
[pid 15614] write(1, "executing program\n", 18executing program
) = 18
[pid 15614] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15614] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15614] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15615 attached
 => {parent_tid=[15615]}, 88) = 15615
[pid 15615] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15615] <... futex resumed>)        = 0
[pid 15615] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15615] <... futex resumed>)        = 0
[pid 15615] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15615] <... futex resumed>)        = 0
[pid 15615] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15615] <... futex resumed>)        = 0
[pid 15614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15615] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15614] exit_group(0)               = ?
[pid 15615] <... futex resumed>)        = ?
[pid 15615] +++ exited with 0 +++
[pid 15614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15616 attached
, child_tidptr=0x55557060c690) = 15616
[pid 15616] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15616] setpgid(0, 0)               = 0
[pid 15616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15616] write(3, "1000", 4)         = 4
[pid 15616] close(3)                    = 0
[pid 15616] write(1, "executing program\n", 18executing program
) = 18
[pid 15616] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15616] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15616] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15616] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15617]}, 88) = 15617
[pid 15616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15617 attached
 <unfinished ...>
[pid 15617] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15616] <... futex resumed>)        = 0
[pid 15616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15616] <... futex resumed>)        = 0
[pid 15616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15616] <... futex resumed>)        = 0
[pid 15616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15616] <... futex resumed>)        = 0
[pid 15616] exit_group(0)               = ?
[pid 15617] +++ exited with 0 +++
[pid 15616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15618 attached
 <unfinished ...>
[pid 15618] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15618] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15618
[pid 15618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15618] write(3, "1000", 4)         = 4
[pid 15618] close(3executing program
)                    = 0
[pid 15618] write(1, "executing program\n", 18) = 18
[pid 15618] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15618] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15618] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15618] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15619 attached
 => {parent_tid=[15619]}, 88) = 15619
[pid 15619] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15619] <... futex resumed>)        = 0
[pid 15619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15619] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15618] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15619] <... futex resumed>)        = 0
[pid 15619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15619] <... futex resumed>)        = 0
[pid 15619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15619] <... futex resumed>)        = 0
[pid 15619] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15619] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15618] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15618] exit_group(0)               = ?
[pid 15619] <... futex resumed>)        = ?
[pid 15619] +++ exited with 0 +++
[pid 15618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15620
./strace-static-x86_64: Process 15620 attached
[pid 15620] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15620] setpgid(0, 0)               = 0
[pid 15620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15620] write(3, "1000", 4)         = 4
[pid 15620] close(3)                    = 0
[pid 15620] write(1, "executing program\n", 18executing program
) = 18
[pid 15620] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15620] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15620] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15621 attached
 <unfinished ...>
[pid 15621] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15621] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15620] <... clone3 resumed> => {parent_tid=[15621]}, 88) = 15621
[pid 15620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15621] <... futex resumed>)        = 0
[pid 15621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15621] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15621] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15620] <... futex resumed>)        = 0
[pid 15620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15621] <... futex resumed>)        = 0
[pid 15620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15621] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15620] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15621] <... futex resumed>)        = 0
[pid 15620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15621] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15620] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15621] <... futex resumed>)        = 0
[pid 15620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15620] <... futex resumed>)        = 0
[pid 15621] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15620] exit_group(0)               = ?
[pid 15621] <... futex resumed>)        = ?
[pid 15621] +++ exited with 0 +++
[pid 15620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15622 attached
, child_tidptr=0x55557060c690) = 15622
[pid 15622] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15622] setpgid(0, 0)               = 0
[pid 15622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15622] write(3, "1000", 4)         = 4
executing program
[pid 15622] close(3)                    = 0
[pid 15622] write(1, "executing program\n", 18) = 18
[pid 15622] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15622] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15622] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15622] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15622] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15622] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15623 attached
 <unfinished ...>
[pid 15623] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15622] <... clone3 resumed> => {parent_tid=[15623]}, 88) = 15623
[pid 15622] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15623] <... futex resumed>)        = 0
[pid 15622] <... futex resumed>)        = 1
[pid 15623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15623] <... futex resumed>)        = 0
[pid 15622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15622] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15623] <... futex resumed>)        = 0
[pid 15622] <... futex resumed>)        = 1
[pid 15623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15623] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15622] <... futex resumed>)        = 0
[pid 15622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15623] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15623] <... futex resumed>)        = 0
[pid 15622] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15622] exit_group(0)               = ?
[pid 15623] <... futex resumed>)        = ?
[pid 15623] +++ exited with 0 +++
[pid 15622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15624
./strace-static-x86_64: Process 15624 attached
[pid 15624] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15624] setpgid(0, 0)               = 0
[pid 15624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15624] write(3, "1000", 4)         = 4
[pid 15624] close(3)                    = 0
executing program
[pid 15624] write(1, "executing program\n", 18) = 18
[pid 15624] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15624] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15624] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15624] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15624] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15624] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15625 attached
 <unfinished ...>
[pid 15625] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15625] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15624] <... clone3 resumed> => {parent_tid=[15625]}, 88) = 15625
[pid 15624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15625] <... futex resumed>)        = 0
[pid 15625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15625] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15625] <... futex resumed>)        = 0
[pid 15624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15625] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15625] <... futex resumed>)        = 0
[pid 15624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15624] <... futex resumed>)        = 0
[pid 15625] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15625] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15624] <... futex resumed>)        = 0
[pid 15624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15625] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15624] <... futex resumed>)        = 0
[pid 15625] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15624] exit_group(0)               = ?
[pid 15625] <... futex resumed>)        = ?
[pid 15625] +++ exited with 0 +++
[pid 15624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15626
./strace-static-x86_64: Process 15626 attached
[pid 15626] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15626] setpgid(0, 0)               = 0
[pid 15626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15626] write(3, "1000", 4)         = 4
[pid 15626] close(3)                    = 0
[pid 15626] write(1, "executing program\n", 18executing program
) = 18
[pid 15626] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15626] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15626] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15627]}, 88) = 15627
[pid 15626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15627 attached
 <unfinished ...>
[pid 15627] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15626] <... futex resumed>)        = 0
[pid 15626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15626] <... futex resumed>)        = 0
[pid 15626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15626] <... futex resumed>)        = 0
[pid 15626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15627] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15626] <... futex resumed>)        = 0
[pid 15626] exit_group(0)               = ?
[pid 15627] +++ exited with 0 +++
[pid 15626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15628
./strace-static-x86_64: Process 15628 attached
[pid 15628] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15628] setpgid(0, 0)               = 0
[pid 15628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15628] write(3, "1000", 4)         = 4
[pid 15628] close(3)                    = 0
[pid 15628] write(1, "executing program\n", 18executing program
) = 18
[pid 15628] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15628] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15628] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15628] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15628] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15628] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15629 attached
 => {parent_tid=[15629]}, 88) = 15629
[pid 15629] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15629] <... futex resumed>)        = 0
[pid 15629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15629] <... futex resumed>)        = 0
[pid 15629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15628] <... futex resumed>)        = 1
[pid 15629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15629] <... futex resumed>)        = 0
[pid 15629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15629] <... futex resumed>)        = 0
[pid 15629] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15629] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15628] exit_group(0)               = ?
[pid 15629] <... futex resumed>)        = ?
[pid 15629] +++ exited with 0 +++
[pid 15628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15630
./strace-static-x86_64: Process 15630 attached
[pid 15630] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15630] setpgid(0, 0)               = 0
[pid 15630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15630] write(3, "1000", 4)         = 4
[pid 15630] close(3)                    = 0
[pid 15630] write(1, "executing program\n", 18executing program
) = 18
[pid 15630] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15630] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15630] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15631]}, 88) = 15631
[pid 15630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15631 attached
 <unfinished ...>
[pid 15631] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15630] <... futex resumed>)        = 0
[pid 15630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15630] <... futex resumed>)        = 0
[pid 15631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15631] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15630] <... futex resumed>)        = 0
[pid 15630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15631] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15630] <... futex resumed>)        = 0
[pid 15630] exit_group(0 <unfinished ...>
[pid 15631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15630] <... exit_group resumed>)   = ?
[pid 15631] <... futex resumed>)        = ?
[pid 15631] +++ exited with 0 +++
[pid 15630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15632 attached
, child_tidptr=0x55557060c690) = 15632
[pid 15632] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15632] setpgid(0, 0)               = 0
[pid 15632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15632] write(3, "1000", 4)         = 4
[pid 15632] close(3)                    = 0
[pid 15632] write(1, "executing program\n", 18executing program
) = 18
[pid 15632] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15632] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15632] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15632] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15633 attached
 => {parent_tid=[15633]}, 88) = 15633
[pid 15633] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15633] <... futex resumed>)        = 0
[pid 15633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15633] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15632] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15633] <... futex resumed>)        = 0
[pid 15633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15633] <... futex resumed>)        = 0
[pid 15633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15633] <... futex resumed>)        = 0
[pid 15633] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15632] exit_group(0)               = ?
[pid 15633] <... futex resumed>)        = ?
[pid 15633] +++ exited with 0 +++
[pid 15632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15634
./strace-static-x86_64: Process 15634 attached
[pid 15634] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15634] setpgid(0, 0)               = 0
[pid 15634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15634] write(3, "1000", 4)         = 4
[pid 15634] close(3)                    = 0
executing program
[pid 15634] write(1, "executing program\n", 18) = 18
[pid 15634] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15634] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15634] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15635 attached
 <unfinished ...>
[pid 15635] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15634] <... clone3 resumed> => {parent_tid=[15635]}, 88) = 15635
[pid 15634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15635] <... futex resumed>)        = 0
[pid 15635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15635] <... futex resumed>)        = 0
[pid 15634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15635] <... futex resumed>)        = 0
[pid 15634] <... futex resumed>)        = 1
[pid 15635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15635] <... futex resumed>)        = 0
[pid 15634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15635] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15634] <... futex resumed>)        = 0
[pid 15635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15634] exit_group(0)               = ?
[pid 15635] <... futex resumed>)        = ?
[pid 15635] +++ exited with 0 +++
[pid 15634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15636
./strace-static-x86_64: Process 15636 attached
[pid 15636] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15636] setpgid(0, 0)               = 0
[pid 15636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15636] write(3, "1000", 4)         = 4
[pid 15636] close(3)                    = 0
executing program
[pid 15636] write(1, "executing program\n", 18) = 18
[pid 15636] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15636] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15636] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15637 attached
 <unfinished ...>
[pid 15637] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15636] <... clone3 resumed> => {parent_tid=[15637]}, 88) = 15637
[pid 15636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15637] <... futex resumed>)        = 0
[pid 15637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15637] <... futex resumed>)        = 0
[pid 15636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15636] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15637] <... futex resumed>)        = 0
[pid 15636] <... futex resumed>)        = 1
[pid 15637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15637] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15636] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15637] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15636] <... futex resumed>)        = 0
[pid 15637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15636] exit_group(0)               = ?
[pid 15637] <... futex resumed>)        = ?
[pid 15637] +++ exited with 0 +++
[pid 15636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15638
./strace-static-x86_64: Process 15638 attached
[pid 15638] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15638] setpgid(0, 0)               = 0
[pid 15638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15638] write(3, "1000", 4)         = 4
[pid 15638] close(3)                    = 0
executing program
[pid 15638] write(1, "executing program\n", 18) = 18
[pid 15638] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15638] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15638] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15639 attached
 => {parent_tid=[15639]}, 88) = 15639
[pid 15638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15639] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15638] <... futex resumed>)        = 0
[pid 15638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15638] <... futex resumed>)        = 0
[pid 15638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15639] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15638] <... futex resumed>)        = 0
[pid 15638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15639] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15638] <... futex resumed>)        = 0
[pid 15638] exit_group(0)               = ?
[pid 15639] +++ exited with 0 +++
[pid 15638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15640 attached
 <unfinished ...>
[pid 15640] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15640] setpgid(0, 0)               = 0
[pid 15640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15640
[pid 15640] <... openat resumed>)       = 3
[pid 15640] write(3, "1000", 4)         = 4
[pid 15640] close(3)                    = 0
executing program
[pid 15640] write(1, "executing program\n", 18) = 18
[pid 15640] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15640] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15640] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15641 attached
 => {parent_tid=[15641]}, 88) = 15641
[pid 15641] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15641] <... futex resumed>)        = 0
[pid 15641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15641] <... futex resumed>)        = 0
[pid 15641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15641] <... futex resumed>)        = 0
[pid 15641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15641] <... futex resumed>)        = 0
[pid 15641] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15640] exit_group(0)               = ?
[pid 15641] <... futex resumed>)        = ?
[pid 15641] +++ exited with 0 +++
[pid 15640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15642
./strace-static-x86_64: Process 15642 attached
[pid 15642] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15642] setpgid(0, 0)               = 0
[pid 15642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15642] write(3, "1000", 4)         = 4
[pid 15642] close(3)                    = 0
[pid 15642] write(1, "executing program\n", 18executing program
) = 18
[pid 15642] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15642] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15642] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15642] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15642] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15642] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15643]}, 88) = 15643
[pid 15642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15643 attached
 <unfinished ...>
[pid 15643] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15642] <... futex resumed>)        = 0
[pid 15642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15642] <... futex resumed>)        = 0
[pid 15642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15642] <... futex resumed>)        = 0
[pid 15642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15643] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15642] <... futex resumed>)        = 0
[pid 15642] exit_group(0)               = ?
[pid 15643] +++ exited with 0 +++
[pid 15642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15644 attached
 <unfinished ...>
[pid 15644] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15644
[pid 15644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15644] setpgid(0, 0)               = 0
[pid 15644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15644] write(3, "1000", 4)         = 4
[pid 15644] close(3)                    = 0
[pid 15644] write(1, "executing program\n", 18executing program
) = 18
[pid 15644] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15644] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15644] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15645]}, 88) = 15645
[pid 15644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15645 attached
 <unfinished ...>
[pid 15645] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15644] <... futex resumed>)        = 0
[pid 15644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15644] <... futex resumed>)        = 0
[pid 15644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15644] <... futex resumed>)        = 0
[pid 15644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15645] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15644] <... futex resumed>)        = 0
[pid 15644] exit_group(0)               = ?
[pid 15645] +++ exited with 0 +++
[pid 15644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15646 attached
 <unfinished ...>
[pid 15646] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15646] setpgid(0, 0)               = 0
[pid 15646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15646] write(3, "1000", 4)         = 4
executing program
[pid 15646] close(3)                    = 0
[pid 15646] write(1, "executing program\n", 18) = 18
[pid 15646] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15646
[pid 15646] <... futex resumed>)        = 0
[pid 15646] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15646] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15646] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15647]}, 88) = 15647
./strace-static-x86_64: Process 15647 attached
[pid 15646] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15647] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15646] <... futex resumed>)        = 0
[pid 15646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15646] <... futex resumed>)        = 0
[pid 15646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15646] <... futex resumed>)        = 0
[pid 15646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15647] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15646] <... futex resumed>)        = 0
[pid 15646] exit_group(0)               = ?
[pid 15647] +++ exited with 0 +++
[pid 15646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15648 attached
 <unfinished ...>
[pid 15648] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15648] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15648
[pid 15648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15648] write(3, "1000", 4)         = 4
[pid 15648] close(3)                    = 0
[pid 15648] write(1, "executing program\n", 18executing program
) = 18
[pid 15648] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15648] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15648] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15648] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15648] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15648] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15649 attached
 => {parent_tid=[15649]}, 88) = 15649
[pid 15649] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15649] <... futex resumed>)        = 0
[pid 15649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15649] <... futex resumed>)        = 0
[pid 15649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15649] <... futex resumed>)        = 0
[pid 15649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15649] <... futex resumed>)        = 0
[pid 15649] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15649] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15648] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15648] exit_group(0)               = ?
[pid 15649] <... futex resumed>)        = ?
[pid 15649] +++ exited with 0 +++
[pid 15648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15650
./strace-static-x86_64: Process 15650 attached
[pid 15650] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15650] setpgid(0, 0)               = 0
[pid 15650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15650] write(3, "1000", 4)         = 4
[pid 15650] close(3)                    = 0
[pid 15650] write(1, "executing program\n", 18executing program
) = 18
[pid 15650] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15650] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15650] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15650] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15651 attached
 => {parent_tid=[15651]}, 88) = 15651
[pid 15651] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15651] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15651] <... futex resumed>)        = 0
[pid 15650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15651] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15650] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15651] <... futex resumed>)        = 0
[pid 15650] <... futex resumed>)        = 1
[pid 15651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15651] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15651] <... futex resumed>)        = 0
[pid 15651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15651] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15651] <... futex resumed>)        = 0
[pid 15650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15651] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15650] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15650] exit_group(0)               = ?
[pid 15651] <... futex resumed>)        = ?
[pid 15651] +++ exited with 0 +++
[pid 15650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15652
./strace-static-x86_64: Process 15652 attached
[pid 15652] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15652] setpgid(0, 0)               = 0
[pid 15652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15652] write(3, "1000", 4)         = 4
[pid 15652] close(3)                    = 0
[pid 15652] write(1, "executing program\n", 18executing program
) = 18
[pid 15652] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15652] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15652] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15653 attached
 <unfinished ...>
[pid 15653] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15652] <... clone3 resumed> => {parent_tid=[15653]}, 88) = 15653
[pid 15652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15653] <... futex resumed>)        = 0
[pid 15653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15653] <... futex resumed>)        = 0
[pid 15652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15652] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15653] <... futex resumed>)        = 0
[pid 15652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15652] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15653] <... futex resumed>)        = 0
[pid 15653] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15652] exit_group(0)               = ?
[pid 15653] <... futex resumed>)        = ?
[pid 15653] +++ exited with 0 +++
[pid 15652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15654
./strace-static-x86_64: Process 15654 attached
[pid 15654] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15654] setpgid(0, 0)               = 0
[pid 15654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15654] write(3, "1000", 4)         = 4
[pid 15654] close(3)                    = 0
executing program
[pid 15654] write(1, "executing program\n", 18) = 18
[pid 15654] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15654] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15654] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15654] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15654] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15654] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15655 attached
 <unfinished ...>
[pid 15655] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15654] <... clone3 resumed> => {parent_tid=[15655]}, 88) = 15655
[pid 15654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15655] <... futex resumed>)        = 0
[pid 15655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15655] <... futex resumed>)        = 0
[pid 15654] <... futex resumed>)        = 1
[pid 15655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15655] <... futex resumed>)        = 0
[pid 15654] <... futex resumed>)        = 1
[pid 15655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15655] <... futex resumed>)        = 0
[pid 15654] <... futex resumed>)        = 1
[pid 15654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15655] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15654] <... futex resumed>)        = 0
[pid 15655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15654] exit_group(0)               = ?
[pid 15655] <... futex resumed>)        = ?
[pid 15655] +++ exited with 0 +++
[pid 15654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15656 attached
, child_tidptr=0x55557060c690) = 15656
[pid 15656] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15656] setpgid(0, 0)               = 0
[pid 15656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15656] write(3, "1000", 4)         = 4
[pid 15656] close(3)                    = 0
executing program
[pid 15656] write(1, "executing program\n", 18) = 18
[pid 15656] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15656] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15656] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15657 attached
 <unfinished ...>
[pid 15657] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15656] <... clone3 resumed> => {parent_tid=[15657]}, 88) = 15657
[pid 15656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15657] <... futex resumed>)        = 0
[pid 15656] <... futex resumed>)        = 1
[pid 15657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15657] <... futex resumed>)        = 0
[pid 15656] <... futex resumed>)        = 1
[pid 15657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15657] <... futex resumed>)        = 0
[pid 15656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15656] <... futex resumed>)        = 0
[pid 15657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15657] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15656] <... futex resumed>)        = 0
[pid 15656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15657] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15656] <... futex resumed>)        = 0
[pid 15657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15656] exit_group(0)               = ?
[pid 15657] <... futex resumed>)        = ?
[pid 15657] +++ exited with 0 +++
[pid 15656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15658
./strace-static-x86_64: Process 15658 attached
[pid 15658] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15658] setpgid(0, 0)               = 0
[pid 15658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15658] write(3, "1000", 4)         = 4
executing program
[pid 15658] close(3)                    = 0
[pid 15658] write(1, "executing program\n", 18) = 18
[pid 15658] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15658] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15658] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15658] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15658] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15658] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15659 attached
 => {parent_tid=[15659]}, 88) = 15659
[pid 15659] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15659] <... futex resumed>)        = 0
[pid 15658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15658] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15659] <... futex resumed>)        = 0
[pid 15658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15658] <... futex resumed>)        = 0
[pid 15658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15658] <... futex resumed>)        = 0
[pid 15658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15658] <... futex resumed>)        = 0
[pid 15658] exit_group(0)               = ?
[pid 15659] +++ exited with 0 +++
[pid 15658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15660 attached
, child_tidptr=0x55557060c690) = 15660
[pid 15660] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15660] setpgid(0, 0)               = 0
[pid 15660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15660] write(3, "1000", 4)         = 4
[pid 15660] close(3)                    = 0
[pid 15660] write(1, "executing program\n", 18executing program
) = 18
[pid 15660] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15660] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15660] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15660] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15660] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15660] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15661]}, 88) = 15661
./strace-static-x86_64: Process 15661 attached
[pid 15660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15661] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15660] <... futex resumed>)        = 0
[pid 15660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15661] <... set_robust_list resumed>) = 0
[pid 15661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15660] <... futex resumed>)        = 0
[pid 15660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15660] <... futex resumed>)        = 0
[pid 15660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15661] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15660] <... futex resumed>)        = 0
[pid 15660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15660] <... futex resumed>)        = 0
[pid 15660] exit_group(0)               = ?
[pid 15661] +++ exited with 0 +++
[pid 15660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15662 attached
, child_tidptr=0x55557060c690) = 15662
[pid 15662] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15662] setpgid(0, 0)               = 0
[pid 15662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15662] write(3, "1000", 4)         = 4
[pid 15662] close(3)                    = 0
[pid 15662] write(1, "executing program\n", 18executing program
) = 18
[pid 15662] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15662] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15662] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15663 attached
 => {parent_tid=[15663]}, 88) = 15663
[pid 15663] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15663] <... futex resumed>)        = 0
[pid 15663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15662] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15663] <... futex resumed>)        = 0
[pid 15663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15663] <... futex resumed>)        = 0
[pid 15663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15663] <... futex resumed>)        = 0
[pid 15663] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15663] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15662] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15662] exit_group(0)               = ?
[pid 15663] <... futex resumed>)        = ?
[pid 15663] +++ exited with 0 +++
[pid 15662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15664 attached
, child_tidptr=0x55557060c690) = 15664
[pid 15664] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15664] setpgid(0, 0)               = 0
[pid 15664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15664] write(3, "1000", 4)         = 4
[pid 15664] close(3)                    = 0
[pid 15664] write(1, "executing program\n", 18executing program
) = 18
[pid 15664] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15664] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15664] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15664] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15664] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15664] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15665]}, 88) = 15665
[pid 15664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15665 attached
 <unfinished ...>
[pid 15665] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15664] <... futex resumed>)        = 0
[pid 15664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15664] <... futex resumed>)        = 0
[pid 15664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15665] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15664] <... futex resumed>)        = 0
[pid 15664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15665] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15664] <... futex resumed>)        = 0
[pid 15664] exit_group(0)               = ?
[pid 15665] +++ exited with 0 +++
[pid 15664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15666 attached
 <unfinished ...>
[pid 15666] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15666] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15666
[pid 15666] <... setpgid resumed>)      = 0
[pid 15666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15666] write(3, "1000", 4)         = 4
[pid 15666] close(3)                    = 0
[pid 15666] write(1, "executing program\n", 18executing program
) = 18
[pid 15666] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15666] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15666] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15666] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15667 attached
 => {parent_tid=[15667]}, 88) = 15667
[pid 15667] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15667] <... futex resumed>)        = 0
[pid 15667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15667] <... futex resumed>)        = 0
[pid 15666] <... futex resumed>)        = 1
[pid 15667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15667] <... futex resumed>)        = 0
[pid 15667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15667] <... futex resumed>)        = 0
[pid 15666] <... futex resumed>)        = 1
[pid 15667] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15667] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15666] exit_group(0)               = ?
[pid 15667] <... futex resumed>)        = ?
[pid 15667] +++ exited with 0 +++
[pid 15666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15668 attached
, child_tidptr=0x55557060c690) = 15668
[pid 15668] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15668] setpgid(0, 0)               = 0
[pid 15668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15668] write(3, "1000", 4)         = 4
[pid 15668] close(3)                    = 0
executing program
[pid 15668] write(1, "executing program\n", 18) = 18
[pid 15668] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15668] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15668] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15668] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15669 attached
 <unfinished ...>
[pid 15669] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15669] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15668] <... clone3 resumed> => {parent_tid=[15669]}, 88) = 15669
[pid 15668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15669] <... futex resumed>)        = 0
[pid 15668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15669] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15668] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15669] <... futex resumed>)        = 0
[pid 15668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15669] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15668] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15669] <... futex resumed>)        = 0
[pid 15669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15669] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15669] <... futex resumed>)        = 0
[pid 15668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15669] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15668] <... futex resumed>)        = 0
[pid 15668] exit_group(0)               = ?
[pid 15669] <... futex resumed>)        = ?
[pid 15669] +++ exited with 0 +++
[pid 15668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15670 attached
, child_tidptr=0x55557060c690) = 15670
[pid 15670] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15670] setpgid(0, 0)               = 0
[pid 15670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15670] write(3, "1000", 4)         = 4
[pid 15670] close(3)                    = 0
executing program
[pid 15670] write(1, "executing program\n", 18) = 18
[pid 15670] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15670] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15670] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15671 attached
 => {parent_tid=[15671]}, 88) = 15671
[pid 15671] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15671] <... futex resumed>)        = 0
[pid 15671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15671] <... futex resumed>)        = 0
[pid 15671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15671] <... futex resumed>)        = 0
[pid 15670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15670] <... futex resumed>)        = 0
[pid 15670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15671] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15670] <... futex resumed>)        = 0
[pid 15671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15670] exit_group(0)               = ?
[pid 15671] <... futex resumed>)        = ?
[pid 15671] +++ exited with 0 +++
[pid 15670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15672 attached
, child_tidptr=0x55557060c690) = 15672
[pid 15672] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15672] setpgid(0, 0)               = 0
[pid 15672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15672] write(3, "1000", 4)         = 4
[pid 15672] close(3)                    = 0
[pid 15672] write(1, "executing program\n", 18executing program
) = 18
[pid 15672] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15672] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15672] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15672] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15672] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15672] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15673]}, 88) = 15673
./strace-static-x86_64: Process 15673 attached
[pid 15672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15673] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15672] <... futex resumed>)        = 0
[pid 15672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15672] <... futex resumed>)        = 0
[pid 15672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15672] <... futex resumed>)        = 0
[pid 15672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15672] <... futex resumed>)        = 0
[pid 15672] exit_group(0)               = ?
[pid 15673] +++ exited with 0 +++
[pid 15672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15674 attached
 <unfinished ...>
[pid 15674] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15674] setpgid(0, 0)               = 0
[pid 15674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15674] write(3, "1000", 4)         = 4
[pid 15674] close(3)                    = 0
executing program
[pid 15674] write(1, "executing program\n", 18) = 18
[pid 15674] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15674] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15674] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15674] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15674] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15674] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15674] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15675]}, 88) = 15675
[pid 15674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15675 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15674
[pid 15675] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15674] <... futex resumed>)        = 0
[pid 15674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15674] <... futex resumed>)        = 0
[pid 15674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15674] <... futex resumed>)        = 0
[pid 15674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15675] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15674] <... futex resumed>)        = 0
[pid 15674] exit_group(0)               = ?
[pid 15675] +++ exited with 0 +++
[pid 15674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15676
./strace-static-x86_64: Process 15676 attached
[pid 15676] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15676] setpgid(0, 0)               = 0
[pid 15676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15676] write(3, "1000", 4)         = 4
[pid 15676] close(3)                    = 0
[pid 15676] write(1, "executing program\n", 18executing program
) = 18
[pid 15676] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15676] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15676] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15676] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15676] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15676] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15677 attached
 => {parent_tid=[15677]}, 88) = 15677
[pid 15677] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15677] <... futex resumed>)        = 0
[pid 15677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15677] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15676] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15677] <... futex resumed>)        = 0
[pid 15677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15677] <... futex resumed>)        = 0
[pid 15677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15677] <... futex resumed>)        = 0
[pid 15676] <... futex resumed>)        = 1
[pid 15677] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15676] exit_group(0)               = ?
[pid 15677] <... futex resumed>)        = ?
[pid 15677] +++ exited with 0 +++
[pid 15676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15678 attached
, child_tidptr=0x55557060c690) = 15678
[pid 15678] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15678] setpgid(0, 0)               = 0
[pid 15678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15678] write(3, "1000", 4executing program
)         = 4
[pid 15678] close(3)                    = 0
[pid 15678] write(1, "executing program\n", 18) = 18
[pid 15678] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15678] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15678] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15678] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15678] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15678] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15679 attached
 => {parent_tid=[15679]}, 88) = 15679
[pid 15678] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15679] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15679] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15678] <... futex resumed>)        = 0
[pid 15678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15678] <... futex resumed>)        = 0
[pid 15678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15678] <... futex resumed>)        = 0
[pid 15678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15678] <... futex resumed>)        = 0
[pid 15678] exit_group(0)               = ?
[pid 15679] +++ exited with 0 +++
[pid 15678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15680
./strace-static-x86_64: Process 15680 attached
[pid 15680] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15680] setpgid(0, 0)               = 0
[pid 15680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15680] write(3, "1000", 4)         = 4
[pid 15680] close(3)                    = 0
[pid 15680] write(1, "executing program\n", 18executing program
) = 18
[pid 15680] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15680] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15680] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15681]}, 88) = 15681
[pid 15680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15681 attached
 <unfinished ...>
[pid 15681] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15680] <... futex resumed>)        = 0
[pid 15680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15680] <... futex resumed>)        = 0
[pid 15680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15680] <... futex resumed>)        = 0
[pid 15680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15681] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15680] <... futex resumed>)        = 0
[pid 15680] exit_group(0)               = ?
[pid 15681] +++ exited with 0 +++
[pid 15680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15682 attached
 <unfinished ...>
[pid 15682] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15682] setpgid(0, 0)               = 0
[pid 15682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15682
[pid 15682] <... openat resumed>)       = 3
[pid 15682] write(3, "1000", 4)         = 4
[pid 15682] close(3)                    = 0
executing program
[pid 15682] write(1, "executing program\n", 18) = 18
[pid 15682] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15682] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15682] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15682] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15682] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15682] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15683]}, 88) = 15683
./strace-static-x86_64: Process 15683 attached
[pid 15682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15683] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15682] <... futex resumed>)        = 0
[pid 15682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15682] <... futex resumed>)        = 0
[pid 15682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15682] <... futex resumed>)        = 0
[pid 15682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15682] <... futex resumed>)        = 0
[pid 15682] exit_group(0)               = ?
[pid 15683] +++ exited with 0 +++
[pid 15682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15684 attached
 <unfinished ...>
[pid 15684] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15684] setpgid(0, 0)               = 0
[pid 15684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15684] write(3, "1000", 4)         = 4
[pid 15684] close(3executing program
)                    = 0
[pid 15684] write(1, "executing program\n", 18) = 18
[pid 15684] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15684] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15684] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15684] rt_sigprocmask(SIG_BLOCK, ~[],  <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15684
[pid 15684] <... rt_sigprocmask resumed>[], 8) = 0
[pid 15684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15685]}, 88) = 15685
[pid 15684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15685 attached
 <unfinished ...>
[pid 15685] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15684] <... futex resumed>)        = 0
[pid 15684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15684] <... futex resumed>)        = 0
[pid 15684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15684] <... futex resumed>)        = 0
[pid 15684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15685] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15684] <... futex resumed>)        = 0
[pid 15684] exit_group(0)               = ?
[pid 15685] +++ exited with 0 +++
[pid 15684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15686 attached
, child_tidptr=0x55557060c690) = 15686
[pid 15686] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15686] setpgid(0, 0)               = 0
[pid 15686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15686] write(3, "1000", 4)         = 4
[pid 15686] close(3)                    = 0
[pid 15686] write(1, "executing program\n", 18executing program
) = 18
[pid 15686] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15686] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15686] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15686] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15687 attached
 => {parent_tid=[15687]}, 88) = 15687
[pid 15687] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15687] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15687] <... futex resumed>)        = 0
[pid 15687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15687] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15687] <... futex resumed>)        = 0
[pid 15687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15687] <... futex resumed>)        = 0
[pid 15687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15687] <... futex resumed>)        = 0
[pid 15687] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15686] exit_group(0)               = ?
[pid 15687] <... futex resumed>)        = ?
[pid 15687] +++ exited with 0 +++
[pid 15686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15688 attached
, child_tidptr=0x55557060c690) = 15688
[pid 15688] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15688] setpgid(0, 0)               = 0
[pid 15688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15688] write(3, "1000", 4executing program
)         = 4
[pid 15688] close(3)                    = 0
[pid 15688] write(1, "executing program\n", 18) = 18
[pid 15688] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15688] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15688] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15688] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15689]}, 88) = 15689
[pid 15688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15689 attached
 <unfinished ...>
[pid 15689] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15689] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15688] <... futex resumed>)        = 0
[pid 15688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15689] <... futex resumed>)        = 1
[pid 15689] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15688] <... futex resumed>)        = 0
[pid 15688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15689] <... futex resumed>)        = 1
[pid 15689] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15688] <... futex resumed>)        = 0
[pid 15688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15689] <... futex resumed>)        = 1
[pid 15689] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15688] <... futex resumed>)        = 0
[pid 15688] exit_group(0)               = ?
[pid 15689] <... futex resumed>)        = ?
[pid 15689] +++ exited with 0 +++
[pid 15688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15690 attached
, child_tidptr=0x55557060c690) = 15690
[pid 15690] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15690] setpgid(0, 0)               = 0
[pid 15690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15690] write(3, "1000", 4)         = 4
[pid 15690] close(3)                    = 0
[pid 15690] write(1, "executing program\n", 18executing program
) = 18
[pid 15690] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15690] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15690] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15690] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15691]}, 88) = 15691
[pid 15690] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15691 attached
 <unfinished ...>
[pid 15691] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15691] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15690] <... futex resumed>)        = 0
[pid 15690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15690] <... futex resumed>)        = 0
[pid 15690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15690] <... futex resumed>)        = 0
[pid 15690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15691] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15690] <... futex resumed>)        = 0
[pid 15690] exit_group(0)               = ?
[pid 15691] +++ exited with 0 +++
[pid 15690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15692 attached
 <unfinished ...>
[pid 15692] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15692] setpgid(0, 0)               = 0
[pid 15692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15692
[pid 15692] <... openat resumed>)       = 3
[pid 15692] write(3, "1000", 4)         = 4
[pid 15692] close(3)                    = 0
[pid 15692] write(1, "executing program\n", 18executing program
) = 18
[pid 15692] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15692] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15692] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15692] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15693]}, 88) = 15693
[pid 15692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15693 attached
 <unfinished ...>
[pid 15693] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15692] <... futex resumed>)        = 0
[pid 15692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15692] <... futex resumed>)        = 0
[pid 15692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15692] <... futex resumed>)        = 0
[pid 15692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15693] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15692] <... futex resumed>)        = 0
[pid 15692] exit_group(0)               = ?
[pid 15693] +++ exited with 0 +++
[pid 15692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15694 attached
 <unfinished ...>
[pid 15694] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15694] setpgid(0, 0)               = 0
[pid 15694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15694] write(3, "1000", 4)         = 4
[pid 15694] close(3executing program
)                    = 0
[pid 15694] write(1, "executing program\n", 18) = 18
[pid 15694] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15694] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15694] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15694] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15695]}, 88) = 15695
./strace-static-x86_64: Process 15695 attached
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15694
[pid 15694] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15695] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15695] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15694] <... futex resumed>)        = 0
[pid 15694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15694] <... futex resumed>)        = 0
[pid 15694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15694] <... futex resumed>)        = 0
[pid 15694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15695] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15694] <... futex resumed>)        = 0
[pid 15694] exit_group(0)               = ?
[pid 15695] +++ exited with 0 +++
[pid 15694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15696
./strace-static-x86_64: Process 15696 attached
[pid 15696] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15696] setpgid(0, 0)               = 0
[pid 15696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15696] write(3, "1000", 4)         = 4
[pid 15696] close(3)                    = 0
[pid 15696] write(1, "executing program\n", 18executing program
) = 18
[pid 15696] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15696] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15696] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15696] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15697 attached
 => {parent_tid=[15697]}, 88) = 15697
[pid 15697] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15697] <... futex resumed>)        = 0
[pid 15696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15696] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15697] <... futex resumed>)        = 0
[pid 15697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15697] <... futex resumed>)        = 0
[pid 15697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15697] <... futex resumed>)        = 0
[pid 15696] <... futex resumed>)        = 1
[pid 15697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15696] exit_group(0)               = ?
[pid 15697] <... futex resumed>)        = ?
[pid 15697] +++ exited with 0 +++
[pid 15696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15698 attached
, child_tidptr=0x55557060c690) = 15698
[pid 15698] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15698] setpgid(0, 0)               = 0
[pid 15698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15698] write(3, "1000", 4)         = 4
executing program
[pid 15698] close(3)                    = 0
[pid 15698] write(1, "executing program\n", 18) = 18
[pid 15698] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15698] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15698] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15699 attached
 <unfinished ...>
[pid 15699] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15698] <... clone3 resumed> => {parent_tid=[15699]}, 88) = 15699
[pid 15698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15699] <... futex resumed>)        = 0
[pid 15698] <... futex resumed>)        = 1
[pid 15699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15699] <... futex resumed>)        = 0
[pid 15698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15698] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15699] <... futex resumed>)        = 0
[pid 15698] <... futex resumed>)        = 1
[pid 15699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15699] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15698] <... futex resumed>)        = 0
[pid 15698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15698] <... futex resumed>)        = 0
[pid 15699] <... futex resumed>)        = 0
[pid 15698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15698] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15698] exit_group(0)               = ?
[pid 15699] <... futex resumed>)        = ?
[pid 15699] +++ exited with 0 +++
[pid 15698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15700
./strace-static-x86_64: Process 15700 attached
[pid 15700] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15700] setpgid(0, 0)               = 0
[pid 15700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15700] write(3, "1000", 4)         = 4
[pid 15700] close(3)                    = 0
[pid 15700] write(1, "executing program\n", 18executing program
) = 18
[pid 15700] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15700] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15700] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15701]}, 88) = 15701
[pid 15700] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15701 attached
 <unfinished ...>
[pid 15701] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15701] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15700] <... futex resumed>)        = 0
[pid 15700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15700] <... futex resumed>)        = 0
[pid 15700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15700] <... futex resumed>)        = 0
[pid 15700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15701] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15700] <... futex resumed>)        = 0
[pid 15700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15700] <... futex resumed>)        = 0
[pid 15700] exit_group(0)               = ?
[pid 15701] +++ exited with 0 +++
[pid 15700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15702 attached
 <unfinished ...>
[pid 15702] set_robust_list(0x55557060c6a0, 24executing program
) = 0
[pid 15702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15702] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15702
[pid 15702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15702] write(3, "1000", 4)         = 4
[pid 15702] close(3)                    = 0
[pid 15702] write(1, "executing program\n", 18) = 18
[pid 15702] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15702] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15702] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15702] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15703 attached
 => {parent_tid=[15703]}, 88) = 15703
[pid 15703] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15703] <... futex resumed>)        = 0
[pid 15703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15703] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15703] <... futex resumed>)        = 0
[pid 15703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15703] <... futex resumed>)        = 0
[pid 15703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15703] <... futex resumed>)        = 0
[pid 15703] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15703] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15702] exit_group(0)               = ?
[pid 15703] <... futex resumed>)        = ?
[pid 15703] +++ exited with 0 +++
[pid 15702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15704 attached
, child_tidptr=0x55557060c690) = 15704
[pid 15704] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15704] setpgid(0, 0)               = 0
[pid 15704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15704] write(3, "1000", 4)         = 4
[pid 15704] close(3)                    = 0
[pid 15704] write(1, "executing program\n", 18executing program
) = 18
[pid 15704] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15704] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15704] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15705]}, 88) = 15705
[pid 15704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15705 attached
 <unfinished ...>
[pid 15705] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15704] <... futex resumed>)        = 0
[pid 15704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15704] <... futex resumed>)        = 0
[pid 15704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15704] <... futex resumed>)        = 0
[pid 15704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15705] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15704] <... futex resumed>)        = 0
[pid 15704] exit_group(0)               = ?
[pid 15705] +++ exited with 0 +++
[pid 15704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15706 attached
 <unfinished ...>
[pid 15706] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15706
[pid 15706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15706] setpgid(0, 0)               = 0
[pid 15706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15706] write(3, "1000", 4)         = 4
[pid 15706] close(3)                    = 0
[pid 15706] write(1, "executing program\n", 18executing program
) = 18
[pid 15706] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15706] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15706] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15706] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15707]}, 88) = 15707
[pid 15706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15707 attached
 <unfinished ...>
[pid 15707] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15706] <... futex resumed>)        = 0
[pid 15706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15706] <... futex resumed>)        = 0
[pid 15706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15706] <... futex resumed>)        = 0
[pid 15706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15707] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15706] <... futex resumed>)        = 0
[pid 15706] exit_group(0)               = ?
[pid 15707] +++ exited with 0 +++
[pid 15706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15708 attached
 <unfinished ...>
[pid 15708] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15708] setpgid(0, 0)               = 0
[pid 15708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15708
[pid 15708] <... openat resumed>)       = 3
[pid 15708] write(3, "1000", 4)         = 4
executing program
[pid 15708] close(3)                    = 0
[pid 15708] write(1, "executing program\n", 18) = 18
[pid 15708] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15708] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15708] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15709]}, 88) = 15709
[pid 15708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15709 attached
 <unfinished ...>
[pid 15709] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15708] <... futex resumed>)        = 0
[pid 15708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15708] <... futex resumed>)        = 0
[pid 15708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15708] <... futex resumed>)        = 0
[pid 15708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15708] <... futex resumed>)        = 0
[pid 15708] exit_group(0)               = ?
[pid 15709] +++ exited with 0 +++
[pid 15708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15710
./strace-static-x86_64: Process 15710 attached
[pid 15710] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15710] setpgid(0, 0)               = 0
[pid 15710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15710] write(3, "1000", 4)         = 4
[pid 15710] close(3)                    = 0
[pid 15710] write(1, "executing program\n", 18executing program
) = 18
[pid 15710] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15710] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15710] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15710] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15711]}, 88) = 15711
[pid 15710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15711 attached
 <unfinished ...>
[pid 15711] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15710] <... futex resumed>)        = 0
[pid 15710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15710] <... futex resumed>)        = 0
[pid 15710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15710] <... futex resumed>)        = 0
[pid 15710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15711] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15710] <... futex resumed>)        = 0
[pid 15710] exit_group(0)               = ?
[pid 15711] +++ exited with 0 +++
[pid 15710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15712 attached
 <unfinished ...>
[pid 15712] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15712] setpgid(0, 0)               = 0
[pid 15712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15712
[pid 15712] <... openat resumed>)       = 3
[pid 15712] write(3, "1000", 4executing program
)         = 4
[pid 15712] close(3)                    = 0
[pid 15712] write(1, "executing program\n", 18) = 18
[pid 15712] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15712] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15712] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15712] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15712] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15712] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15713]}, 88) = 15713
[pid 15712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15713 attached
 <unfinished ...>
[pid 15713] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15712] <... futex resumed>)        = 0
[pid 15712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15712] <... futex resumed>)        = 0
[pid 15712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15712] <... futex resumed>)        = 0
[pid 15712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15712] <... futex resumed>)        = 0
[pid 15712] exit_group(0)               = ?
[pid 15713] +++ exited with 0 +++
[pid 15712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15714 attached
 <unfinished ...>
[pid 15714] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15714] setpgid(0, 0)               = 0
[pid 15714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15714] write(3, "1000", 4)         = 4
[pid 15714] close(3)                    = 0
executing program
[pid 15714] write(1, "executing program\n", 18) = 18
[pid 15714] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15714] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15714] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15714
[pid 15714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15715 attached
 => {parent_tid=[15715]}, 88) = 15715
[pid 15714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15715] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15714] <... futex resumed>)        = 0
[pid 15714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15714] <... futex resumed>)        = 0
[pid 15714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15714] <... futex resumed>)        = 0
[pid 15714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15714] <... futex resumed>)        = 0
[pid 15714] exit_group(0)               = ?
[pid 15715] +++ exited with 0 +++
[pid 15714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15716 attached
, child_tidptr=0x55557060c690) = 15716
[pid 15716] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15716] setpgid(0, 0)               = 0
[pid 15716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15716] write(3, "1000", 4)         = 4
[pid 15716] close(3)                    = 0
[pid 15716] write(1, "executing program\n", 18executing program
) = 18
[pid 15716] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15716] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15716] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15716] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15717 attached
 => {parent_tid=[15717]}, 88) = 15717
[pid 15717] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15717] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15716] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15717] <... futex resumed>)        = 0
[pid 15717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15717] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15717] <... futex resumed>)        = 0
[pid 15717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15717] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15717] <... futex resumed>)        = 0
[pid 15716] <... futex resumed>)        = 1
[pid 15717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15717] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15717] <... futex resumed>)        = 0
[pid 15717] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15717] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15717] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15716] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15716] exit_group(0)               = ?
[pid 15717] <... futex resumed>)        = ?
[pid 15717] +++ exited with 0 +++
[pid 15716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15718
./strace-static-x86_64: Process 15718 attached
[pid 15718] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15718] setpgid(0, 0)               = 0
[pid 15718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15718] write(3, "1000", 4)         = 4
[pid 15718] close(3)                    = 0
[pid 15718] write(1, "executing program\n", 18executing program
) = 18
[pid 15718] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15718] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15718] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15718] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15719]}, 88) = 15719
[pid 15718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15719 attached
 <unfinished ...>
[pid 15719] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15718] <... futex resumed>)        = 0
[pid 15718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15719] <... futex resumed>)        = 1
[pid 15719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15718] <... futex resumed>)        = 0
[pid 15718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15719] <... futex resumed>)        = 1
[pid 15719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15718] <... futex resumed>)        = 0
[pid 15718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15719] <... futex resumed>)        = 1
[pid 15719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15718] <... futex resumed>)        = 0
[pid 15718] exit_group(0)               = ?
[pid 15719] <... futex resumed>)        = ?
[pid 15719] +++ exited with 0 +++
[pid 15718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15720 attached
, child_tidptr=0x55557060c690) = 15720
[pid 15720] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15720] setpgid(0, 0)               = 0
[pid 15720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15720] write(3, "1000", 4)         = 4
[pid 15720] close(3)                    = 0
[pid 15720] write(1, "executing program\n", 18executing program
) = 18
[pid 15720] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15720] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15720] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15721 attached
 => {parent_tid=[15721]}, 88) = 15721
[pid 15721] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15721] <... futex resumed>)        = 0
[pid 15721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15721] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15720] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15721] <... futex resumed>)        = 0
[pid 15721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 1
[pid 15721] <... futex resumed>)        = 0
[pid 15721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15721] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15720] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15721] <... futex resumed>)        = 0
[pid 15720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15720] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15720] exit_group(0)               = ?
[pid 15721] <... futex resumed>)        = ?
[pid 15721] +++ exited with 0 +++
[pid 15720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15722
./strace-static-x86_64: Process 15722 attached
[pid 15722] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15722] setpgid(0, 0)               = 0
[pid 15722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15722] write(3, "1000", 4)         = 4
[pid 15722] close(3)                    = 0
[pid 15722] write(1, "executing program\n", 18) = 18
[pid 15722] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15722] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15722] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15722] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15723 attached
 <unfinished ...>
[pid 15723] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15722] <... clone3 resumed> => {parent_tid=[15723]}, 88) = 15723
[pid 15722] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15723] <... futex resumed>)        = 0
[pid 15722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15722] <... futex resumed>)        = 0
[pid 15722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15723] <... futex resumed>)        = 0
[pid 15722] <... futex resumed>)        = 1
[pid 15723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15722] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15723] <... futex resumed>)        = 0
[pid 15722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15722] <... futex resumed>)        = 0
[pid 15722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15722] <... futex resumed>)        = 0
[pid 15723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15722] exit_group(0)               = ?
[pid 15723] <... futex resumed>)        = ?
[pid 15723] +++ exited with 0 +++
[pid 15722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15724
./strace-static-x86_64: Process 15724 attached
[pid 15724] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15724] setpgid(0, 0)               = 0
[pid 15724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15724] write(3, "1000", 4executing program
)         = 4
[pid 15724] close(3)                    = 0
[pid 15724] write(1, "executing program\n", 18) = 18
[pid 15724] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15724] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15724] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15724] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15725 attached
 => {parent_tid=[15725]}, 88) = 15725
[pid 15725] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15725] <... futex resumed>)        = 0
[pid 15724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15725] <... futex resumed>)        = 0
[pid 15724] <... futex resumed>)        = 1
[pid 15725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15725] <... futex resumed>)        = 0
[pid 15724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15724] <... futex resumed>)        = 0
[pid 15724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15725] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15724] <... futex resumed>)        = 0
[pid 15725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15724] exit_group(0)               = ?
[pid 15725] <... futex resumed>)        = ?
[pid 15725] +++ exited with 0 +++
[pid 15724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15726
./strace-static-x86_64: Process 15726 attached
[pid 15726] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15726] setpgid(0, 0)               = 0
[pid 15726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15726] write(3, "1000", 4)         = 4
executing program
[pid 15726] close(3)                    = 0
[pid 15726] write(1, "executing program\n", 18) = 18
[pid 15726] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15726] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15726] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15726] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15727 attached
 <unfinished ...>
[pid 15727] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15726] <... clone3 resumed> => {parent_tid=[15727]}, 88) = 15727
[pid 15726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15727] <... futex resumed>)        = 0
[pid 15726] <... futex resumed>)        = 1
[pid 15727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15727] <... futex resumed>)        = 0
[pid 15726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15726] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15727] <... futex resumed>)        = 0
[pid 15726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15726] <... futex resumed>)        = 0
[pid 15726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15727] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15726] <... futex resumed>)        = 0
[pid 15727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15726] exit_group(0)               = ?
[pid 15727] <... futex resumed>)        = ?
[pid 15727] +++ exited with 0 +++
[pid 15726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15728
./strace-static-x86_64: Process 15728 attached
[pid 15728] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15728] setpgid(0, 0)               = 0
[pid 15728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15728] write(3, "1000", 4)         = 4
[pid 15728] close(3)                    = 0
[pid 15728] write(1, "executing program\n", 18) = 18
executing program
[pid 15728] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15728] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15728] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15728] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15729]}, 88) = 15729
./strace-static-x86_64: Process 15729 attached
[pid 15728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15729] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15728] <... futex resumed>)        = 0
[pid 15728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15728] <... futex resumed>)        = 0
[pid 15728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15728] <... futex resumed>)        = 0
[pid 15728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15729] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15728] <... futex resumed>)        = 0
[pid 15728] exit_group(0)               = ?
[pid 15729] +++ exited with 0 +++
[pid 15728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15730 attached
 <unfinished ...>
[pid 15730] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15730] setpgid(0, 0)               = 0
[pid 15730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15730
[pid 15730] <... openat resumed>)       = 3
[pid 15730] write(3, "1000", 4executing program
)         = 4
[pid 15730] close(3)                    = 0
[pid 15730] write(1, "executing program\n", 18) = 18
[pid 15730] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15730] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15730] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15730] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15731]}, 88) = 15731
./strace-static-x86_64: Process 15731 attached
[pid 15730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15731] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15730] <... futex resumed>)        = 0
[pid 15730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15730] <... futex resumed>)        = 0
[pid 15730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15730] <... futex resumed>)        = 0
[pid 15730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15730] <... futex resumed>)        = 0
[pid 15730] exit_group(0)               = ?
[pid 15731] +++ exited with 0 +++
[pid 15730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15732 attached
 <unfinished ...>
[pid 15732] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15732
[pid 15732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15732] setpgid(0, 0)               = 0
[pid 15732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15732] write(3, "1000", 4)         = 4
[pid 15732] close(3)                    = 0
[pid 15732] write(1, "executing program\n", 18executing program
) = 18
[pid 15732] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15732] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15732] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15733]}, 88) = 15733
[pid 15732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15733 attached
 <unfinished ...>
[pid 15733] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15732] <... futex resumed>)        = 0
[pid 15732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15732] <... futex resumed>)        = 0
[pid 15732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15732] <... futex resumed>)        = 0
[pid 15732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15733] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15732] <... futex resumed>)        = 0
[pid 15732] exit_group(0)               = ?
[pid 15733] +++ exited with 0 +++
[pid 15732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15734
./strace-static-x86_64: Process 15734 attached
[pid 15734] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15734] setpgid(0, 0)               = 0
[pid 15734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15734] write(3, "1000", 4)         = 4
[pid 15734] close(3)                    = 0
[pid 15734] write(1, "executing program\n", 18executing program
) = 18
[pid 15734] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15734] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15734] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15734] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15734] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15734] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15735]}, 88) = 15735
[pid 15734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15735 attached
 <unfinished ...>
[pid 15735] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15734] <... futex resumed>)        = 0
[pid 15734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15734] <... futex resumed>)        = 0
[pid 15734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15734] <... futex resumed>)        = 0
[pid 15734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15735] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15734] <... futex resumed>)        = 0
[pid 15734] exit_group(0)               = ?
[pid 15735] +++ exited with 0 +++
[pid 15734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15736
./strace-static-x86_64: Process 15736 attached
[pid 15736] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15736] setpgid(0, 0)               = 0
[pid 15736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15736] write(3, "1000", 4)         = 4
[pid 15736] close(3)                    = 0
[pid 15736] write(1, "executing program\n", 18executing program
) = 18
[pid 15736] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15736] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15736] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15736] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15736] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15736] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15737]}, 88) = 15737
[pid 15736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15737 attached
 <unfinished ...>
[pid 15737] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15736] <... futex resumed>)        = 0
[pid 15736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15736] <... futex resumed>)        = 0
[pid 15736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15736] <... futex resumed>)        = 0
[pid 15736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15737] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15736] <... futex resumed>)        = 0
[pid 15736] exit_group(0)               = ?
[pid 15737] +++ exited with 0 +++
[pid 15736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15738 attached
 <unfinished ...>
[pid 15738] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15738] setpgid(0, 0)               = 0
[pid 15738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15738
[pid 15738] <... openat resumed>)       = 3
[pid 15738] write(3, "1000", 4)         = 4
[pid 15738] close(3)                    = 0
executing program
[pid 15738] write(1, "executing program\n", 18) = 18
[pid 15738] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15738] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15738] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15738] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15739]}, 88) = 15739
./strace-static-x86_64: Process 15739 attached
[pid 15738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15739] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15738] <... futex resumed>)        = 0
[pid 15738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15738] <... futex resumed>)        = 0
[pid 15738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15738] <... futex resumed>)        = 0
[pid 15738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15739] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15738] <... futex resumed>)        = 0
[pid 15738] exit_group(0)               = ?
[pid 15739] +++ exited with 0 +++
[pid 15738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15740 attached
 <unfinished ...>
[pid 15740] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15740] setpgid(0, 0)               = 0
[pid 15740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15740] write(3, "1000", 4)         = 4
[pid 15740] close(3)                    = 0
executing program
[pid 15740] write(1, "executing program\n", 18) = 18
[pid 15740] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15740] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15740] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15740] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15741]}, 88) = 15741
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15740
[pid 15740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15741 attached
 <unfinished ...>
[pid 15741] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15740] <... futex resumed>)        = 0
[pid 15740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15740] <... futex resumed>)        = 0
[pid 15740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15740] <... futex resumed>)        = 0
[pid 15740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15741] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15740] <... futex resumed>)        = 0
[pid 15740] exit_group(0)               = ?
[pid 15741] +++ exited with 0 +++
[pid 15740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15742 attached
, child_tidptr=0x55557060c690) = 15742
[pid 15742] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15742] setpgid(0, 0)               = 0
[pid 15742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15742] write(3, "1000", 4)         = 4
[pid 15742] close(3)                    = 0
[pid 15742] write(1, "executing program\n", 18executing program
) = 18
[pid 15742] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15742] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15742] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15742] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15742] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15742] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15743 attached
 => {parent_tid=[15743]}, 88) = 15743
[pid 15743] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15742] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15743] <... futex resumed>)        = 0
[pid 15743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15743] <... futex resumed>)        = 0
[pid 15743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15743] <... futex resumed>)        = 0
[pid 15743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15743] <... futex resumed>)        = 0
[pid 15743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15742] exit_group(0)               = ?
[pid 15743] <... futex resumed>)        = ?
[pid 15743] +++ exited with 0 +++
[pid 15742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15744 attached
, child_tidptr=0x55557060c690) = 15744
[pid 15744] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15744] setpgid(0, 0)               = 0
[pid 15744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15744] write(3, "1000", 4)         = 4
[pid 15744] close(3executing program
)                    = 0
[pid 15744] write(1, "executing program\n", 18) = 18
[pid 15744] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15744] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15744] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15745]}, 88) = 15745
[pid 15744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15745 attached
 <unfinished ...>
[pid 15745] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15744] <... futex resumed>)        = 0
[pid 15744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15744] <... futex resumed>)        = 0
[pid 15744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15744] <... futex resumed>)        = 0
[pid 15744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15745] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15744] <... futex resumed>)        = 0
[pid 15744] exit_group(0)               = ?
[pid 15745] +++ exited with 0 +++
[pid 15744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15746 attached
, child_tidptr=0x55557060c690) = 15746
[pid 15746] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15746] setpgid(0, 0)               = 0
[pid 15746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15746] write(3, "1000", 4)         = 4
[pid 15746] close(3)                    = 0
[pid 15746] write(1, "executing program\n", 18executing program
) = 18
[pid 15746] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15746] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15746] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15747 attached
 => {parent_tid=[15747]}, 88) = 15747
[pid 15747] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15747] <... futex resumed>)        = 0
[pid 15747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15747] <... futex resumed>)        = 0
[pid 15747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15747] <... futex resumed>)        = 0
[pid 15747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15747] <... futex resumed>)        = 0
[pid 15746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15747] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15746] exit_group(0)               = ?
[pid 15747] <... futex resumed>)        = ?
[pid 15747] +++ exited with 0 +++
[pid 15746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15748
./strace-static-x86_64: Process 15748 attached
[pid 15748] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15748] setpgid(0, 0)               = 0
[pid 15748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15748] write(3, "1000", 4)         = 4
[pid 15748] close(3executing program
)                    = 0
[pid 15748] write(1, "executing program\n", 18) = 18
[pid 15748] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15748] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15748] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15748] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15748] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15748] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15749 attached
 => {parent_tid=[15749]}, 88) = 15749
[pid 15749] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15748] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15749] <... futex resumed>)        = 0
[pid 15748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15749] <... futex resumed>)        = 0
[pid 15748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15749] <... futex resumed>)        = 0
[pid 15748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15748] <... futex resumed>)        = 0
[pid 15748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15749] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15748] <... futex resumed>)        = 0
[pid 15749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15748] exit_group(0)               = ?
[pid 15749] <... futex resumed>)        = ?
[pid 15749] +++ exited with 0 +++
[pid 15748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15750 attached
, child_tidptr=0x55557060c690) = 15750
[pid 15750] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15750] setpgid(0, 0)               = 0
[pid 15750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15750] write(3, "1000", 4)         = 4
[pid 15750] close(3)                    = 0
[pid 15750] write(1, "executing program\n", 18executing program
) = 18
[pid 15750] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15750] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15750] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15751 attached
 <unfinished ...>
[pid 15751] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15751] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15751] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15750] <... clone3 resumed> => {parent_tid=[15751]}, 88) = 15751
[pid 15750] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15751] <... futex resumed>)        = 0
[pid 15751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15751] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15751] <... futex resumed>)        = 0
[pid 15750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15751] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15750] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15751] <... futex resumed>)        = 0
[pid 15750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15750] <... futex resumed>)        = 0
[pid 15750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15751] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15750] <... futex resumed>)        = 0
[pid 15751] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15750] exit_group(0)               = ?
[pid 15751] <... futex resumed>)        = ?
[pid 15751] +++ exited with 0 +++
[pid 15750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15752 attached
, child_tidptr=0x55557060c690) = 15752
[pid 15752] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15752] setpgid(0, 0)               = 0
[pid 15752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15752] write(3, "1000", 4)         = 4
[pid 15752] close(3)                    = 0
executing program
[pid 15752] write(1, "executing program\n", 18) = 18
[pid 15752] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15752] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15752] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15752] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15753 attached
 => {parent_tid=[15753]}, 88) = 15753
[pid 15753] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15752] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15753] <... futex resumed>)        = 0
[pid 15752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15752] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15753] <... futex resumed>)        = 0
[pid 15752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15752] <... futex resumed>)        = 0
[pid 15753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15753] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15752] <... futex resumed>)        = 0
[pid 15752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15753] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15752] <... futex resumed>)        = 0
[pid 15753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15752] exit_group(0)               = ?
[pid 15753] <... futex resumed>)        = ?
[pid 15753] +++ exited with 0 +++
[pid 15752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15754 attached
, child_tidptr=0x55557060c690) = 15754
[pid 15754] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15754] setpgid(0, 0)               = 0
[pid 15754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15754] write(3, "1000", 4)         = 4
[pid 15754] close(3)                    = 0
executing program
[pid 15754] write(1, "executing program\n", 18) = 18
[pid 15754] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15754] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15754] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15754] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15755 attached
 => {parent_tid=[15755]}, 88) = 15755
[pid 15755] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15755] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15755] <... futex resumed>)        = 0
[pid 15755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15755] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15755] <... futex resumed>)        = 0
[pid 15755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15755] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15755] <... futex resumed>)        = 0
[pid 15754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15754] <... futex resumed>)        = 0
[pid 15754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15755] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15754] <... futex resumed>)        = 0
[pid 15755] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15754] exit_group(0)               = ?
[pid 15755] <... futex resumed>)        = ?
[pid 15755] +++ exited with 0 +++
[pid 15754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15756
./strace-static-x86_64: Process 15756 attached
[pid 15756] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15756] setpgid(0, 0)               = 0
[pid 15756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15756] write(3, "1000", 4)         = 4
[pid 15756] close(3executing program
)                    = 0
[pid 15756] write(1, "executing program\n", 18) = 18
[pid 15756] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15756] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15756] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15757 attached
 <unfinished ...>
[pid 15757] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15757] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15756] <... clone3 resumed> => {parent_tid=[15757]}, 88) = 15757
[pid 15756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15757] <... futex resumed>)        = 0
[pid 15757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15757] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15757] <... futex resumed>)        = 0
[pid 15756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15757] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15756] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15757] <... futex resumed>)        = 0
[pid 15757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15757] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15757] <... futex resumed>)        = 0
[pid 15756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15757] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15756] <... futex resumed>)        = 0
[pid 15757] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15756] exit_group(0)               = ?
[pid 15757] <... futex resumed>)        = ?
[pid 15757] +++ exited with 0 +++
[pid 15756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15758
./strace-static-x86_64: Process 15758 attached
[pid 15758] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15758] setpgid(0, 0)               = 0
[pid 15758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15758] write(3, "1000", 4)         = 4
[pid 15758] close(3)                    = 0
[pid 15758] write(1, "executing program\n", 18executing program
) = 18
[pid 15758] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15758] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15758] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15758] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15758] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15758] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15759]}, 88) = 15759
[pid 15758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15759 attached
 <unfinished ...>
[pid 15759] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15758] <... futex resumed>)        = 0
[pid 15758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15758] <... futex resumed>)        = 0
[pid 15758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15758] <... futex resumed>)        = 0
[pid 15758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15759] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15758] <... futex resumed>)        = 0
[pid 15758] exit_group(0)               = ?
[pid 15759] +++ exited with 0 +++
[pid 15758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15760
./strace-static-x86_64: Process 15760 attached
[pid 15760] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15760] setpgid(0, 0)               = 0
[pid 15760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15760] write(3, "1000", 4)         = 4
[pid 15760] close(3)                    = 0
[pid 15760] write(1, "executing program\n", 18executing program
) = 18
[pid 15760] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15760] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15760] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15760] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15760] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15760] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15761]}, 88) = 15761
[pid 15760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15761 attached
 <unfinished ...>
[pid 15761] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15760] <... futex resumed>)        = 0
[pid 15761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15761] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15760] <... futex resumed>)        = 0
[pid 15760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15760] <... futex resumed>)        = 0
[pid 15760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15761] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15760] <... futex resumed>)        = 0
[pid 15760] exit_group(0)               = ?
[pid 15761] +++ exited with 0 +++
[pid 15760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15762
./strace-static-x86_64: Process 15762 attached
[pid 15762] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15762] setpgid(0, 0)               = 0
[pid 15762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15762] write(3, "1000", 4)         = 4
[pid 15762] close(3)                    = 0
[pid 15762] write(1, "executing program\n", 18executing program
) = 18
[pid 15762] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15762] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15762] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15763]}, 88) = 15763
[pid 15762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15763 attached
 <unfinished ...>
[pid 15763] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15762] <... futex resumed>)        = 0
[pid 15762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15762] <... futex resumed>)        = 0
[pid 15762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15762] <... futex resumed>)        = 0
[pid 15762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15762] <... futex resumed>)        = 0
[pid 15762] exit_group(0)               = ?
[pid 15763] +++ exited with 0 +++
[pid 15762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15764 attached
 <unfinished ...>
[pid 15764] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15764
[pid 15764] setpgid(0, 0)               = 0
[pid 15764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15764] write(3, "1000", 4)         = 4
[pid 15764] close(3)                    = 0
[pid 15764] write(1, "executing program\n", 18executing program
) = 18
[pid 15764] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15764] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15764] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15764] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15765 attached
 => {parent_tid=[15765]}, 88) = 15765
[pid 15765] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15765] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15765] <... futex resumed>)        = 0
[pid 15765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15765] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15765] <... futex resumed>)        = 0
[pid 15765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15765] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15765] <... futex resumed>)        = 0
[pid 15764] <... futex resumed>)        = 1
[pid 15765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15765] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15765] <... futex resumed>)        = 0
[pid 15765] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15765] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15765] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15764] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15764] exit_group(0)               = ?
[pid 15765] <... futex resumed>)        = ?
[pid 15765] +++ exited with 0 +++
[pid 15764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15766
./strace-static-x86_64: Process 15766 attached
[pid 15766] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15766] setpgid(0, 0)               = 0
[pid 15766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15766] write(3, "1000", 4)         = 4
[pid 15766] close(3)                    = 0
executing program
[pid 15766] write(1, "executing program\n", 18) = 18
[pid 15766] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15766] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15766] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15767 attached
 <unfinished ...>
[pid 15767] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15767] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15766] <... clone3 resumed> => {parent_tid=[15767]}, 88) = 15767
[pid 15766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15767] <... futex resumed>)        = 0
[pid 15766] <... futex resumed>)        = 1
[pid 15767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15767] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15767] <... futex resumed>)        = 0
[pid 15766] <... futex resumed>)        = 1
[pid 15767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15767] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15767] <... futex resumed>)        = 0
[pid 15766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15767] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15766] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15767] <... futex resumed>)        = 0
[pid 15766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15766] <... futex resumed>)        = 0
[pid 15767] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15766] exit_group(0)               = ?
[pid 15767] <... futex resumed>)        = ?
[pid 15767] +++ exited with 0 +++
[pid 15766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15768
./strace-static-x86_64: Process 15768 attached
[pid 15768] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15768] setpgid(0, 0)               = 0
[pid 15768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15768] write(3, "1000", 4)         = 4
[pid 15768] close(3)                    = 0
executing program
[pid 15768] write(1, "executing program\n", 18) = 18
[pid 15768] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15768] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15768] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15768] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15768] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15769 attached
 => {parent_tid=[15769]}, 88) = 15769
[pid 15769] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15769] <... futex resumed>)        = 0
[pid 15769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15769] <... futex resumed>)        = 0
[pid 15769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15769] <... futex resumed>)        = 0
[pid 15768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15768] <... futex resumed>)        = 0
[pid 15768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15769] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15768] <... futex resumed>)        = 0
[pid 15769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15768] exit_group(0)               = ?
[pid 15769] <... futex resumed>)        = ?
[pid 15769] +++ exited with 0 +++
[pid 15768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15770
./strace-static-x86_64: Process 15770 attached
[pid 15770] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15770] setpgid(0, 0)               = 0
[pid 15770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 15770] write(3, "1000", 4)         = 4
[pid 15770] close(3)                    = 0
[pid 15770] write(1, "executing program\n", 18) = 18
[pid 15770] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15770] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15770] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15770] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15770] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15770] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15771]}, 88) = 15771
[pid 15770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15771 attached
 <unfinished ...>
[pid 15771] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15770] <... futex resumed>)        = 0
[pid 15770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15770] <... futex resumed>)        = 0
[pid 15770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15770] <... futex resumed>)        = 0
[pid 15770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15771] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15770] <... futex resumed>)        = 0
[pid 15770] exit_group(0)               = ?
[pid 15771] +++ exited with 0 +++
[pid 15770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15772 attached
 <unfinished ...>
[pid 15772] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15772] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15772
[pid 15772] <... prctl resumed>)        = 0
[pid 15772] setpgid(0, 0)               = 0
[pid 15772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15772] write(3, "1000", 4)         = 4
[pid 15772] close(3executing program
)                    = 0
[pid 15772] write(1, "executing program\n", 18) = 18
[pid 15772] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15772] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15772] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15772] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15773]}, 88) = 15773
[pid 15772] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15773 attached
 <unfinished ...>
[pid 15773] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15773] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15772] <... futex resumed>)        = 0
[pid 15772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15772] <... futex resumed>)        = 0
[pid 15772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15772] <... futex resumed>)        = 0
[pid 15772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15773] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15772] <... futex resumed>)        = 0
[pid 15772] exit_group(0)               = ?
[pid 15773] +++ exited with 0 +++
[pid 15772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15774 attached
 <unfinished ...>
[pid 15774] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15774] setpgid(0, 0)               = 0
[pid 15774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15774
[pid 15774] <... openat resumed>)       = 3
[pid 15774] write(3, "1000", 4)         = 4
[pid 15774] close(3executing program
)                    = 0
[pid 15774] write(1, "executing program\n", 18) = 18
[pid 15774] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15774] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15774] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15774] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15775 attached
 => {parent_tid=[15775]}, 88) = 15775
[pid 15775] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15774] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15775] <... futex resumed>)        = 0
[pid 15774] <... futex resumed>)        = 1
[pid 15775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15775] <... futex resumed>)        = 0
[pid 15775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15775] <... futex resumed>)        = 0
[pid 15774] <... futex resumed>)        = 1
[pid 15775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15775] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15774] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15775] <... futex resumed>)        = 0
[pid 15774] <... futex resumed>)        = 1
[pid 15774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15775] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15774] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15774] exit_group(0)               = ?
[pid 15775] <... futex resumed>)        = ?
[pid 15775] +++ exited with 0 +++
[pid 15774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15776 attached
, child_tidptr=0x55557060c690) = 15776
[pid 15776] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15776] setpgid(0, 0)               = 0
[pid 15776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15776] write(3, "1000", 4)         = 4
executing program
[pid 15776] close(3)                    = 0
[pid 15776] write(1, "executing program\n", 18) = 18
[pid 15776] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15776] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15776] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15776] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15777 attached
 <unfinished ...>
[pid 15777] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15777] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15776] <... clone3 resumed> => {parent_tid=[15777]}, 88) = 15777
[pid 15776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15777] <... futex resumed>)        = 0
[pid 15776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15777] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15776] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15777] <... futex resumed>)        = 0
[pid 15777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15777] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15777] <... futex resumed>)        = 0
[pid 15776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15776] <... futex resumed>)        = 0
[pid 15776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15777] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15777] <... futex resumed>)        = 0
[pid 15776] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15777] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15776] exit_group(0)               = ?
[pid 15777] <... futex resumed>)        = ?
[pid 15777] +++ exited with 0 +++
[pid 15776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15778
./strace-static-x86_64: Process 15778 attached
[pid 15778] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15778] setpgid(0, 0)               = 0
[pid 15778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15778] write(3, "1000", 4)         = 4
[pid 15778] close(3)                    = 0
[pid 15778] write(1, "executing program\n", 18executing program
) = 18
[pid 15778] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15778] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15778] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15778] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15779]}, 88) = 15779
[pid 15778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15779 attached
 <unfinished ...>
[pid 15779] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15778] <... futex resumed>)        = 0
[pid 15778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15778] <... futex resumed>)        = 0
[pid 15778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15778] <... futex resumed>)        = 0
[pid 15778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15779] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15778] <... futex resumed>)        = 0
[pid 15778] exit_group(0 <unfinished ...>
[pid 15779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15778] <... exit_group resumed>)   = ?
[pid 15779] <... futex resumed>)        = ?
[pid 15779] +++ exited with 0 +++
[pid 15778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15780
./strace-static-x86_64: Process 15780 attached
[pid 15780] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15780] setpgid(0, 0)               = 0
[pid 15780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15780] write(3, "1000", 4)         = 4
[pid 15780] close(3)                    = 0
[pid 15780] write(1, "executing program\n", 18executing program
) = 18
[pid 15780] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15780] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15780] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15780] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15781]}, 88) = 15781
./strace-static-x86_64: Process 15781 attached
[pid 15781] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15781] <... futex resumed>)        = 0
[pid 15781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15781] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15781] <... futex resumed>)        = 0
[pid 15781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15781] <... futex resumed>)        = 0
[pid 15781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15781] <... futex resumed>)        = 0
[pid 15781] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15781] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15780] exit_group(0)               = ?
[pid 15781] <... futex resumed>)        = ?
[pid 15781] +++ exited with 0 +++
[pid 15780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15782
./strace-static-x86_64: Process 15782 attached
[pid 15782] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15782] setpgid(0, 0)               = 0
[pid 15782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15782] write(3, "1000", 4)         = 4
[pid 15782] close(3)                    = 0
executing program
[pid 15782] write(1, "executing program\n", 18) = 18
[pid 15782] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15782] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15782] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15782] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15783 attached
 <unfinished ...>
[pid 15783] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15783] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15783] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15782] <... clone3 resumed> => {parent_tid=[15783]}, 88) = 15783
[pid 15782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15783] <... futex resumed>)        = 0
[pid 15782] <... futex resumed>)        = 1
[pid 15783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15783] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15783] <... futex resumed>)        = 0
[pid 15782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15783] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15782] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15783] <... futex resumed>)        = 0
[pid 15782] <... futex resumed>)        = 1
[pid 15783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15783] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15783] <... futex resumed>)        = 0
[pid 15782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15783] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15782] <... futex resumed>)        = 0
[pid 15783] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15782] exit_group(0)               = ?
[pid 15783] <... futex resumed>)        = ?
[pid 15783] +++ exited with 0 +++
[pid 15782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15784 attached
, child_tidptr=0x55557060c690) = 15784
[pid 15784] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15784] setpgid(0, 0)               = 0
[pid 15784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15784] write(3, "1000", 4)         = 4
[pid 15784] close(3)                    = 0
[pid 15784] write(1, "executing program\n", 18executing program
) = 18
[pid 15784] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15784] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15784] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15784] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15784] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15784] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15785 attached
 <unfinished ...>
[pid 15785] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15784] <... clone3 resumed> => {parent_tid=[15785]}, 88) = 15785
[pid 15784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15785] <... futex resumed>)        = 0
[pid 15785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15785] <... futex resumed>)        = 0
[pid 15785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15785] <... futex resumed>)        = 0
[pid 15785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15785] <... futex resumed>)        = 0
[pid 15785] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15784] exit_group(0)               = ?
[pid 15785] <... futex resumed>)        = ?
[pid 15785] +++ exited with 0 +++
[pid 15784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15786
./strace-static-x86_64: Process 15786 attached
[pid 15786] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15786] setpgid(0, 0)               = 0
[pid 15786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15786] write(3, "1000", 4executing program
)         = 4
[pid 15786] close(3)                    = 0
[pid 15786] write(1, "executing program\n", 18) = 18
[pid 15786] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15786] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15786] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15786] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15787]}, 88) = 15787
[pid 15786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15787 attached
 <unfinished ...>
[pid 15787] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15787] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15786] <... futex resumed>)        = 0
[pid 15786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15786] <... futex resumed>)        = 0
[pid 15786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15786] <... futex resumed>)        = 0
[pid 15786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15787] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15786] <... futex resumed>)        = 0
[pid 15786] exit_group(0)               = ?
[pid 15787] +++ exited with 0 +++
[pid 15786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15788 attached
 <unfinished ...>
[pid 15788] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15788
[pid 15788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15788] setpgid(0, 0)               = 0
[pid 15788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15788] write(3, "1000", 4)         = 4
[pid 15788] close(3)                    = 0
[pid 15788] write(1, "executing program\n", 18executing program
) = 18
[pid 15788] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15788] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15788] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15788] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15789]}, 88) = 15789
[pid 15788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15789 attached
 <unfinished ...>
[pid 15789] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15788] <... futex resumed>)        = 0
[pid 15788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15788] <... futex resumed>)        = 0
[pid 15788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15788] <... futex resumed>)        = 0
[pid 15788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15789] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15788] <... futex resumed>)        = 0
[pid 15788] exit_group(0)               = ?
[pid 15789] +++ exited with 0 +++
[pid 15788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15790 attached
 <unfinished ...>
[pid 15790] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15790] setpgid(0, 0)               = 0
[pid 15790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15790
[pid 15790] <... openat resumed>)       = 3
[pid 15790] write(3, "1000", 4)         = 4
[pid 15790] close(3)                    = 0
executing program
[pid 15790] write(1, "executing program\n", 18) = 18
[pid 15790] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15790] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15790] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15790] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15791]}, 88) = 15791
./strace-static-x86_64: Process 15791 attached
[pid 15790] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15791] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15791] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15790] <... futex resumed>)        = 0
[pid 15790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15790] <... futex resumed>)        = 0
[pid 15790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15790] <... futex resumed>)        = 0
[pid 15790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15791] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15790] <... futex resumed>)        = 0
[pid 15790] exit_group(0)               = ?
[pid 15791] +++ exited with 0 +++
[pid 15790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15792 attached
 <unfinished ...>
[pid 15792] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15792] setpgid(0, 0)               = 0
[pid 15792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15792] write(3, "1000", 4)         = 4
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15792
[pid 15792] close(3)                    = 0
[pid 15792] write(1, "executing program\n", 18executing program
) = 18
[pid 15792] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15792] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15792] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15792] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15792] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15792] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15793]}, 88) = 15793
[pid 15792] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15793 attached
 <unfinished ...>
[pid 15793] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15792] <... futex resumed>)        = 0
[pid 15792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15792] <... futex resumed>)        = 0
[pid 15792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15792] <... futex resumed>)        = 0
[pid 15792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15792] <... futex resumed>)        = 0
[pid 15792] exit_group(0)               = ?
[pid 15793] +++ exited with 0 +++
[pid 15792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15794 attached
 <unfinished ...>
[pid 15794] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15794] setpgid(0, 0)               = 0
[pid 15794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15794
[pid 15794] write(3, "1000", 4)         = 4
[pid 15794] close(3)                    = 0
[pid 15794] write(1, "executing program\n", 18executing program
) = 18
[pid 15794] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15794] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15794] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15794] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15795]}, 88) = 15795
[pid 15794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15795 attached
 <unfinished ...>
[pid 15795] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15794] <... futex resumed>)        = 0
[pid 15794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15794] <... futex resumed>)        = 0
[pid 15794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15794] <... futex resumed>)        = 0
[pid 15794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15794] <... futex resumed>)        = 0
[pid 15794] exit_group(0)               = ?
[pid 15795] +++ exited with 0 +++
[pid 15794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15796
./strace-static-x86_64: Process 15796 attached
[pid 15796] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15796] setpgid(0, 0)               = 0
[pid 15796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15796] write(3, "1000", 4executing program
)         = 4
[pid 15796] close(3)                    = 0
[pid 15796] write(1, "executing program\n", 18) = 18
[pid 15796] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15796] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15796] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15796] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15796] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15796] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15797]}, 88) = 15797
[pid 15796] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15797 attached
 <unfinished ...>
[pid 15797] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15797] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15796] <... futex resumed>)        = 0
[pid 15796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15796] <... futex resumed>)        = 0
[pid 15796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15796] <... futex resumed>)        = 0
[pid 15796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15796] <... futex resumed>)        = 0
[pid 15796] exit_group(0)               = ?
[pid 15797] +++ exited with 0 +++
[pid 15796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15798 attached
, child_tidptr=0x55557060c690) = 15798
[pid 15798] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15798] setpgid(0, 0)               = 0
[pid 15798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15798] write(3, "1000", 4)         = 4
[pid 15798] close(3)                    = 0
[pid 15798] write(1, "executing program\n", 18executing program
) = 18
[pid 15798] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15798] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15798] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15798] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15799 attached
 => {parent_tid=[15799]}, 88) = 15799
[pid 15799] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15799] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15799] <... futex resumed>)        = 0
[pid 15799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15799] <... futex resumed>)        = 0
[pid 15799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15799] <... futex resumed>)        = 0
[pid 15799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15799] <... futex resumed>)        = 0
[pid 15799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15798] exit_group(0)               = ?
[pid 15799] <... futex resumed>)        = ?
[pid 15799] +++ exited with 0 +++
[pid 15798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15800 attached
, child_tidptr=0x55557060c690) = 15800
[pid 15800] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15800] setpgid(0, 0)               = 0
[pid 15800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15800] write(3, "1000", 4)         = 4
[pid 15800] close(3)                    = 0
executing program
[pid 15800] write(1, "executing program\n", 18) = 18
[pid 15800] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15800] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15800] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15800] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15800] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15800] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15801]}, 88) = 15801
[pid 15800] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15801 attached
 <unfinished ...>
[pid 15801] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15801] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15800] <... futex resumed>)        = 0
[pid 15800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15800] <... futex resumed>)        = 0
[pid 15800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15800] <... futex resumed>)        = 0
[pid 15800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15800] <... futex resumed>)        = 0
[pid 15800] exit_group(0)               = ?
[pid 15801] +++ exited with 0 +++
[pid 15800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15802
./strace-static-x86_64: Process 15802 attached
[pid 15802] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15802] setpgid(0, 0)               = 0
[pid 15802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15802] write(3, "1000", 4executing program
)         = 4
[pid 15802] close(3)                    = 0
[pid 15802] write(1, "executing program\n", 18) = 18
[pid 15802] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15802] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15802] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15802] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15802] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15802] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15803 attached
 => {parent_tid=[15803]}, 88) = 15803
[pid 15803] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15802] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15803] <... futex resumed>)        = 0
[pid 15803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15803] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15802] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15803] <... futex resumed>)        = 0
[pid 15803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15802] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15803] <... futex resumed>)        = 0
[pid 15803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15803] <... futex resumed>)        = 0
[pid 15803] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15803] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15802] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15802] exit_group(0)               = ?
[pid 15803] <... futex resumed>)        = ?
[pid 15803] +++ exited with 0 +++
[pid 15802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15804
./strace-static-x86_64: Process 15804 attached
[pid 15804] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15804] setpgid(0, 0)               = 0
[pid 15804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15804] write(3, "1000", 4)         = 4
[pid 15804] close(3)                    = 0
[pid 15804] write(1, "executing program\n", 18executing program
) = 18
[pid 15804] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15804] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15804] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15804] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15805]}, 88) = 15805
[pid 15804] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15805 attached
 <unfinished ...>
[pid 15805] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15804] <... futex resumed>)        = 0
[pid 15804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15804] <... futex resumed>)        = 0
[pid 15804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15804] <... futex resumed>)        = 0
[pid 15804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15805] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15804] <... futex resumed>)        = 0
[pid 15804] exit_group(0)               = ?
[pid 15805] +++ exited with 0 +++
[pid 15804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15806 attached
 <unfinished ...>
[pid 15806] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15806] setpgid(0, 0)               = 0
[pid 15806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15806
[pid 15806] <... openat resumed>)       = 3
[pid 15806] write(3, "1000", 4)         = 4
[pid 15806] close(3executing program
)                    = 0
[pid 15806] write(1, "executing program\n", 18) = 18
[pid 15806] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15806] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15806] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15806] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15806] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15806] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15806] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15807 attached
 => {parent_tid=[15807]}, 88) = 15807
[pid 15807] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15807] <... futex resumed>)        = 0
[pid 15807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15807] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15807] <... futex resumed>)        = 0
[pid 15807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15807] <... futex resumed>)        = 0
[pid 15807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15807] <... futex resumed>)        = 0
[pid 15807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15807] <... futex resumed>)        = 0
[pid 15807] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15807] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15806] exit_group(0)               = ?
[pid 15807] <... futex resumed>)        = ?
[pid 15807] +++ exited with 0 +++
[pid 15806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15808
./strace-static-x86_64: Process 15808 attached
[pid 15808] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15808] setpgid(0, 0)               = 0
[pid 15808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15808] write(3, "1000", 4)         = 4
[pid 15808] close(3)                    = 0
executing program
[pid 15808] write(1, "executing program\n", 18) = 18
[pid 15808] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15808] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15808] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15809]}, 88) = 15809
[pid 15808] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15809 attached
 <unfinished ...>
[pid 15809] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15809] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15808] <... futex resumed>)        = 0
[pid 15808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15808] <... futex resumed>)        = 0
[pid 15808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15808] <... futex resumed>)        = 0
[pid 15808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15809] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15808] <... futex resumed>)        = 0
[pid 15808] exit_group(0)               = ?
[pid 15809] +++ exited with 0 +++
[pid 15808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15810 attached
, child_tidptr=0x55557060c690) = 15810
[pid 15810] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15810] setpgid(0, 0)               = 0
[pid 15810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15810] write(3, "1000", 4)         = 4
[pid 15810] close(3)                    = 0
[pid 15810] write(1, "executing program\n", 18executing program
) = 18
[pid 15810] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15810] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15810] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15810] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15811 attached
 => {parent_tid=[15811]}, 88) = 15811
[pid 15811] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15811] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15811] <... futex resumed>)        = 0
[pid 15811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15811] <... futex resumed>)        = 0
[pid 15811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15811] <... futex resumed>)        = 0
[pid 15811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15811] <... futex resumed>)        = 0
[pid 15811] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15811] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15810] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15810] exit_group(0)               = ?
[pid 15811] <... futex resumed>)        = ?
[pid 15811] +++ exited with 0 +++
[pid 15810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15812
./strace-static-x86_64: Process 15812 attached
[pid 15812] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15812] setpgid(0, 0)               = 0
[pid 15812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15812] write(3, "1000", 4)         = 4
[pid 15812] close(3)                    = 0
executing program
[pid 15812] write(1, "executing program\n", 18) = 18
[pid 15812] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15812] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15812] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15812] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15813]}, 88) = 15813
[pid 15812] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15813 attached
 <unfinished ...>
[pid 15813] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15813] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15812] <... futex resumed>)        = 0
[pid 15812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15812] <... futex resumed>)        = 0
[pid 15812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15812] <... futex resumed>)        = 0
[pid 15812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15813] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15812] <... futex resumed>)        = 0
[pid 15812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15813] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15812] <... futex resumed>)        = 0
[pid 15812] exit_group(0)               = ?
[pid 15813] +++ exited with 0 +++
[pid 15812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15814 attached
 <unfinished ...>
[pid 15814] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15814
[pid 15814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15814] setpgid(0, 0)               = 0
[pid 15814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15814] write(3, "1000", 4)         = 4
[pid 15814] close(3)                    = 0
[pid 15814] write(1, "executing program\n", 18executing program
) = 18
[pid 15814] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15814] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15814] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15814] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15814] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15814] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15815 attached
 => {parent_tid=[15815]}, 88) = 15815
[pid 15815] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15815] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15815] <... futex resumed>)        = 0
[pid 15815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15815] <... futex resumed>)        = 0
[pid 15815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15815] <... futex resumed>)        = 0
[pid 15815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15815] <... futex resumed>)        = 0
[pid 15815] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15814] exit_group(0)               = ?
[pid 15815] <... futex resumed>)        = ?
[pid 15815] +++ exited with 0 +++
[pid 15814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15816
./strace-static-x86_64: Process 15816 attached
[pid 15816] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15816] setpgid(0, 0)               = 0
[pid 15816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15816] write(3, "1000", 4)         = 4
[pid 15816] close(3executing program
)                    = 0
[pid 15816] write(1, "executing program\n", 18) = 18
[pid 15816] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15816] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15816] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15816] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15817 attached
 <unfinished ...>
[pid 15817] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15817] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15816] <... clone3 resumed> => {parent_tid=[15817]}, 88) = 15817
[pid 15816] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15817] <... futex resumed>)        = 0
[pid 15816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15816] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15817] <... futex resumed>)        = 0
[pid 15816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15816] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15817] <... futex resumed>)        = 0
[pid 15817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15817] <... futex resumed>)        = 0
[pid 15816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15816] <... futex resumed>)        = 0
[pid 15817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15816] exit_group(0)               = ?
[pid 15817] <... futex resumed>)        = ?
[pid 15817] +++ exited with 0 +++
[pid 15816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15818
./strace-static-x86_64: Process 15818 attached
[pid 15818] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15818] setpgid(0, 0)               = 0
[pid 15818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15818] write(3, "1000", 4)         = 4
[pid 15818] close(3)                    = 0
[pid 15818] write(1, "executing program\n", 18executing program
) = 18
[pid 15818] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15818] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15818] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15819 attached
 => {parent_tid=[15819]}, 88) = 15819
[pid 15819] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15819] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15819] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15818] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15819] <... futex resumed>)        = 0
[pid 15818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15819] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15818] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15819] <... futex resumed>)        = 0
[pid 15819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15819] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15819] <... futex resumed>)        = 0
[pid 15818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15819] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15818] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15819] <... futex resumed>)        = 0
[pid 15818] <... futex resumed>)        = 1
[pid 15819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15819] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15818] exit_group(0)               = ?
[pid 15819] <... futex resumed>)        = ?
[pid 15819] +++ exited with 0 +++
[pid 15818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15820
./strace-static-x86_64: Process 15820 attached
[pid 15820] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15820] setpgid(0, 0)               = 0
[pid 15820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15820] write(3, "1000", 4)         = 4
[pid 15820] close(3)                    = 0
executing program
[pid 15820] write(1, "executing program\n", 18) = 18
[pid 15820] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15820] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15820] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15820] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15820] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15820] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15821 attached
 <unfinished ...>
[pid 15821] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15820] <... clone3 resumed> => {parent_tid=[15821]}, 88) = 15821
[pid 15820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15821] <... futex resumed>)        = 0
[pid 15821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15821] <... futex resumed>)        = 0
[pid 15820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15820] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15821] <... futex resumed>)        = 0
[pid 15820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15820] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15821] <... futex resumed>)        = 0
[pid 15820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15821] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15820] <... futex resumed>)        = 0
[pid 15820] exit_group(0)               = ?
[pid 15821] <... futex resumed>)        = ?
[pid 15821] +++ exited with 0 +++
[pid 15820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15822
./strace-static-x86_64: Process 15822 attached
[pid 15822] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15822] setpgid(0, 0)               = 0
[pid 15822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15822] write(3, "1000", 4)         = 4
executing program
[pid 15822] close(3)                    = 0
[pid 15822] write(1, "executing program\n", 18) = 18
[pid 15822] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15822] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15822] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15822] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15823 attached
 <unfinished ...>
[pid 15823] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15823] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15822] <... clone3 resumed> => {parent_tid=[15823]}, 88) = 15823
[pid 15822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15823] <... futex resumed>)        = 0
[pid 15822] <... futex resumed>)        = 1
[pid 15823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15823] <... futex resumed>)        = 0
[pid 15822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15822] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15823] <... futex resumed>)        = 0
[pid 15822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15822] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15823] <... futex resumed>)        = 0
[pid 15822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15822] <... futex resumed>)        = 0
[pid 15823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15822] exit_group(0)               = ?
[pid 15823] <... futex resumed>)        = ?
[pid 15823] +++ exited with 0 +++
[pid 15822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15824
./strace-static-x86_64: Process 15824 attached
[pid 15824] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15824] setpgid(0, 0)               = 0
[pid 15824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15824] write(3, "1000", 4)         = 4
[pid 15824] close(3)                    = 0
executing program
[pid 15824] write(1, "executing program\n", 18) = 18
[pid 15824] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15824] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15824] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15824] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15825 attached
 <unfinished ...>
[pid 15825] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15825] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15824] <... clone3 resumed> => {parent_tid=[15825]}, 88) = 15825
[pid 15824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15825] <... futex resumed>)        = 0
[pid 15824] <... futex resumed>)        = 1
[pid 15825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15825] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15825] <... futex resumed>)        = 0
[pid 15824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15825] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15824] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15825] <... futex resumed>)        = 0
[pid 15824] <... futex resumed>)        = 1
[pid 15825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15825] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15824] <... futex resumed>)        = 0
[pid 15825] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15825] <... futex resumed>)        = 0
[pid 15824] <... futex resumed>)        = 1
[pid 15825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15824] <... futex resumed>)        = 0
[pid 15825] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15824] exit_group(0)               = ?
[pid 15825] <... futex resumed>)        = ?
[pid 15825] +++ exited with 0 +++
[pid 15824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15826
./strace-static-x86_64: Process 15826 attached
[pid 15826] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15826] setpgid(0, 0)               = 0
[pid 15826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15826] write(3, "1000", 4)         = 4
[pid 15826] close(3executing program
)                    = 0
[pid 15826] write(1, "executing program\n", 18) = 18
[pid 15826] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15826] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15826] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15826] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15826] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15826] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15827 attached
 <unfinished ...>
[pid 15827] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15826] <... clone3 resumed> => {parent_tid=[15827]}, 88) = 15827
[pid 15826] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15827] <... futex resumed>)        = 0
[pid 15826] <... futex resumed>)        = 1
[pid 15827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15827] <... futex resumed>)        = 0
[pid 15826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15826] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15827] <... futex resumed>)        = 0
[pid 15826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15826] <... futex resumed>)        = 0
[pid 15826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15827] <... futex resumed>)        = 0
[pid 15826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15826] <... futex resumed>)        = 0
[pid 15826] exit_group(0)               = ?
[pid 15827] <... futex resumed>)        = ?
[pid 15827] +++ exited with 0 +++
[pid 15826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15828
./strace-static-x86_64: Process 15828 attached
[pid 15828] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15828] setpgid(0, 0)               = 0
[pid 15828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15828] write(3, "1000", 4)         = 4
[pid 15828] close(3)                    = 0
executing program
[pid 15828] write(1, "executing program\n", 18) = 18
[pid 15828] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15828] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15828] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15828] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15829 attached
 => {parent_tid=[15829]}, 88) = 15829
[pid 15829] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15829] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15829] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15828] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15829] <... futex resumed>)        = 0
[pid 15829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15829] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15829] <... futex resumed>)        = 0
[pid 15829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15829] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15829] <... futex resumed>)        = 0
[pid 15829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15829] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15829] <... futex resumed>)        = 0
[pid 15829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15829] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15828] exit_group(0)               = ?
[pid 15829] <... futex resumed>)        = ?
[pid 15829] +++ exited with 0 +++
[pid 15828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15830
./strace-static-x86_64: Process 15830 attached
[pid 15830] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15830] setpgid(0, 0)               = 0
[pid 15830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15830] write(3, "1000", 4)         = 4
[pid 15830] close(3)                    = 0
[pid 15830] write(1, "executing program\n", 18) = 18
[pid 15830] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15830] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15830] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15830] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15831 attached
 => {parent_tid=[15831]}, 88) = 15831
[pid 15831] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15831] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15830] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15831] <... futex resumed>)        = 0
[pid 15830] <... futex resumed>)        = 1
[pid 15831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15831] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15830] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15831] <... futex resumed>)        = 0
[pid 15831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15830] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15831] <... futex resumed>)        = 0
[pid 15830] <... futex resumed>)        = 1
[pid 15831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15831] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15830] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15831] <... futex resumed>)        = 0
[pid 15831] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15831] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15830] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15830] exit_group(0)               = ?
[pid 15831] <... futex resumed>)        = ?
[pid 15831] +++ exited with 0 +++
[pid 15830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15832
./strace-static-x86_64: Process 15832 attached
[pid 15832] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15832] setpgid(0, 0)               = 0
[pid 15832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15832] write(3, "1000", 4)         = 4
[pid 15832] close(3)                    = 0
executing program
[pid 15832] write(1, "executing program\n", 18) = 18
[pid 15832] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15832] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15832] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15832] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15832] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15832] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15833]}, 88) = 15833
[pid 15832] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15833 attached
 <unfinished ...>
[pid 15833] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15833] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15833] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15832] <... futex resumed>)        = 0
[pid 15832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15833] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15832] <... futex resumed>)        = 0
[pid 15832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15833] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15832] <... futex resumed>)        = 0
[pid 15832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15833] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15832] <... futex resumed>)        = 0
[pid 15832] exit_group(0)               = ?
[pid 15833] +++ exited with 0 +++
[pid 15832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15834
./strace-static-x86_64: Process 15834 attached
[pid 15834] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15834] setpgid(0, 0)               = 0
[pid 15834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15834] write(3, "1000", 4)         = 4
[pid 15834] close(3)                    = 0
[pid 15834] write(1, "executing program\n", 18) = 18
[pid 15834] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15834] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15834] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15834] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15834] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15834] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15835 attached
 => {parent_tid=[15835]}, 88) = 15835
[pid 15835] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15834] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15835] <... futex resumed>)        = 0
[pid 15834] <... futex resumed>)        = 1
[pid 15835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15835] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15835] <... futex resumed>)        = 0
[pid 15834] <... futex resumed>)        = 1
[pid 15835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15835] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15835] <... futex resumed>)        = 0
[pid 15834] <... futex resumed>)        = 1
[pid 15835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15835] <... futex resumed>)        = 0
[pid 15834] <... futex resumed>)        = 1
[pid 15835] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15835] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15834] exit_group(0)               = ?
[pid 15835] <... futex resumed>)        = ?
[pid 15835] +++ exited with 0 +++
[pid 15834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15836
./strace-static-x86_64: Process 15836 attached
[pid 15836] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15836] setpgid(0, 0)               = 0
[pid 15836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15836] write(3, "1000", 4)         = 4
[pid 15836] close(3)                    = 0
[pid 15836] write(1, "executing program\n", 18executing program
) = 18
[pid 15836] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15836] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15836] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15836] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15837]}, 88) = 15837
[pid 15836] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15837 attached
 <unfinished ...>
[pid 15837] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15837] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15836] <... futex resumed>)        = 0
[pid 15836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15836] <... futex resumed>)        = 0
[pid 15837] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15837] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15836] <... futex resumed>)        = 0
[pid 15836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15837] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15836] <... futex resumed>)        = 0
[pid 15836] exit_group(0)               = ?
[pid 15837] +++ exited with 0 +++
[pid 15836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15838
./strace-static-x86_64: Process 15838 attached
[pid 15838] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15838] setpgid(0, 0)               = 0
[pid 15838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15838] write(3, "1000", 4)         = 4
[pid 15838] close(3)                    = 0
[pid 15838] write(1, "executing program\n", 18) = 18
[pid 15838] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15838] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15838] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15838] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15838] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15838] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15839 attached
 => {parent_tid=[15839]}, 88) = 15839
[pid 15839] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15839] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15839] <... futex resumed>)        = 0
[pid 15839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15839] <... futex resumed>)        = 0
[pid 15839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15839] <... futex resumed>)        = 0
[pid 15839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15839] <... futex resumed>)        = 0
[pid 15839] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15839] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15838] exit_group(0)               = ?
[pid 15839] <... futex resumed>)        = ?
[pid 15839] +++ exited with 0 +++
[pid 15838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15840
./strace-static-x86_64: Process 15840 attached
[pid 15840] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15840] setpgid(0, 0)               = 0
[pid 15840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15840] write(3, "1000", 4)         = 4
[pid 15840] close(3)                    = 0
[pid 15840] write(1, "executing program\n", 18executing program
) = 18
[pid 15840] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15840] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15840] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15840] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15840] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15840] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15841 attached
 => {parent_tid=[15841]}, 88) = 15841
[pid 15841] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15841] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15841] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15840] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15841] <... futex resumed>)        = 0
[pid 15841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15841] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15841] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15841] <... futex resumed>)        = 0
[pid 15840] <... futex resumed>)        = 1
[pid 15841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15841] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15841] <... futex resumed>)        = 0
[pid 15840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15841] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15841] <... futex resumed>)        = 0
[pid 15841] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15841] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15841] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15840] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15840] exit_group(0)               = ?
[pid 15841] <... futex resumed>)        = ?
[pid 15841] +++ exited with 0 +++
[pid 15840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15842
./strace-static-x86_64: Process 15842 attached
[pid 15842] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15842] setpgid(0, 0)               = 0
[pid 15842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15842] write(3, "1000", 4)         = 4
[pid 15842] close(3)                    = 0
[pid 15842] write(1, "executing program\n", 18executing program
) = 18
[pid 15842] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15842] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15842] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15842] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15843]}, 88) = 15843
[pid 15842] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15843 attached
 <unfinished ...>
[pid 15843] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15843] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15842] <... futex resumed>)        = 0
[pid 15842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15842] <... futex resumed>)        = 0
[pid 15842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15842] <... futex resumed>)        = 0
[pid 15842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15842] <... futex resumed>)        = 0
[pid 15842] exit_group(0)               = ?
[pid 15843] +++ exited with 0 +++
[pid 15842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15844 attached
 <unfinished ...>
[pid 15844] set_robust_list(0x55557060c6a0, 24 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15844
[pid 15844] <... set_robust_list resumed>) = 0
[pid 15844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15844] setpgid(0, 0)               = 0
[pid 15844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15844] write(3, "1000", 4)         = 4
[pid 15844] close(3)                    = 0
[pid 15844] write(1, "executing program\n", 18executing program
) = 18
[pid 15844] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15844] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15844] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15844] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15845 attached
 => {parent_tid=[15845]}, 88) = 15845
[pid 15845] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15845] <... futex resumed>)        = 0
[pid 15845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15845] <... futex resumed>)        = 0
[pid 15845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15845] <... futex resumed>)        = 0
[pid 15845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15845] <... futex resumed>)        = 0
[pid 15845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15844] exit_group(0)               = ?
[pid 15845] <... futex resumed>)        = ?
[pid 15845] +++ exited with 0 +++
[pid 15844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15846
./strace-static-x86_64: Process 15846 attached
[pid 15846] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15846] setpgid(0, 0)               = 0
[pid 15846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15846] write(3, "1000", 4)         = 4
[pid 15846] close(3)                    = 0
[pid 15846] write(1, "executing program\n", 18executing program
) = 18
[pid 15846] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15846] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15846] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15846] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15846] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15846] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15847 attached
 => {parent_tid=[15847]}, 88) = 15847
[pid 15847] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15847] <... futex resumed>)        = 0
[pid 15847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15847] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15846] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15847] <... futex resumed>)        = 0
[pid 15847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15847] <... futex resumed>)        = 0
[pid 15847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15847] <... futex resumed>)        = 0
[pid 15846] <... futex resumed>)        = 1
[pid 15847] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15846] exit_group(0)               = ?
[pid 15847] <... futex resumed>)        = ?
[pid 15847] +++ exited with 0 +++
[pid 15846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15848 attached
, child_tidptr=0x55557060c690) = 15848
[pid 15848] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15848] setpgid(0, 0)               = 0
[pid 15848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15848] write(3, "1000", 4)         = 4
[pid 15848] close(3)                    = 0
executing program
[pid 15848] write(1, "executing program\n", 18) = 18
[pid 15848] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15848] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15848] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15848] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15849 attached
 <unfinished ...>
[pid 15849] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15848] <... clone3 resumed> => {parent_tid=[15849]}, 88) = 15849
[pid 15848] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15849] <... futex resumed>)        = 0
[pid 15849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15849] <... futex resumed>)        = 0
[pid 15848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15848] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15849] <... futex resumed>)        = 0
[pid 15848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15848] <... futex resumed>)        = 0
[pid 15848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15849] <... futex resumed>)        = 0
[pid 15848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15849] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15848] <... futex resumed>)        = 0
[pid 15849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15848] exit_group(0)               = ?
[pid 15849] <... futex resumed>)        = ?
[pid 15849] +++ exited with 0 +++
[pid 15848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15850
./strace-static-x86_64: Process 15850 attached
[pid 15850] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15850] setpgid(0, 0)               = 0
[pid 15850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15850] write(3, "1000", 4)         = 4
[pid 15850] close(3)                    = 0
executing program
[pid 15850] write(1, "executing program\n", 18) = 18
[pid 15850] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15850] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15850] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15850] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15851 attached
 <unfinished ...>
[pid 15851] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15850] <... clone3 resumed> => {parent_tid=[15851]}, 88) = 15851
[pid 15850] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15851] <... futex resumed>)        = 0
[pid 15851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15851] <... futex resumed>)        = 0
[pid 15850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15850] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15851] <... futex resumed>)        = 0
[pid 15850] <... futex resumed>)        = 1
[pid 15851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15851] <... futex resumed>)        = 0
[pid 15850] <... futex resumed>)        = 1
[pid 15850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15850] <... futex resumed>)        = 0
[pid 15851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15850] exit_group(0)               = ?
[pid 15851] <... futex resumed>)        = ?
[pid 15851] +++ exited with 0 +++
[pid 15850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15852
./strace-static-x86_64: Process 15852 attached
[pid 15852] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15852] setpgid(0, 0)               = 0
[pid 15852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15852] write(3, "1000", 4)         = 4
[pid 15852] close(3)                    = 0
[pid 15852] write(1, "executing program\n", 18executing program
) = 18
[pid 15852] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15852] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15852] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15852] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15853 attached
 <unfinished ...>
[pid 15853] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15853] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15852] <... clone3 resumed> => {parent_tid=[15853]}, 88) = 15853
[pid 15852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15853] <... futex resumed>)        = 0
[pid 15852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15852] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15853] <... futex resumed>)        = 0
[pid 15852] <... futex resumed>)        = 1
[pid 15853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15853] <... futex resumed>)        = 0
[pid 15853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15853] <... futex resumed>)        = 0
[pid 15852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15853] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15852] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15852] exit_group(0)               = ?
[pid 15853] <... futex resumed>)        = ?
[pid 15853] +++ exited with 0 +++
[pid 15852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15854
./strace-static-x86_64: Process 15854 attached
[pid 15854] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15854] setpgid(0, 0)               = 0
[pid 15854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15854] write(3, "1000", 4)         = 4
[pid 15854] close(3)                    = 0
[pid 15854] write(1, "executing program\n", 18executing program
) = 18
[pid 15854] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15854] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15854] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15854] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15855]}, 88) = 15855
[pid 15854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15855 attached
 <unfinished ...>
[pid 15855] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15855] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15854] <... futex resumed>)        = 0
[pid 15854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15854] <... futex resumed>)        = 0
[pid 15855] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15855] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15854] <... futex resumed>)        = 0
[pid 15854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15854] <... futex resumed>)        = 0
[pid 15854] exit_group(0)               = ?
[pid 15855] +++ exited with 0 +++
[pid 15854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15856 attached
, child_tidptr=0x55557060c690) = 15856
[pid 15856] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15856] setpgid(0, 0)               = 0
[pid 15856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15856] write(3, "1000", 4)         = 4
[pid 15856] close(3)                    = 0
[pid 15856] write(1, "executing program\n", 18executing program
) = 18
[pid 15856] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15856] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15856] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15856] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15856] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15856] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15857 attached
 => {parent_tid=[15857]}, 88) = 15857
[pid 15857] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15857] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15857] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15856] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15857] <... futex resumed>)        = 0
[pid 15857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15857] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15857] <... futex resumed>)        = 0
[pid 15857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15857] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15857] <... futex resumed>)        = 0
[pid 15857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15857] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15857] <... futex resumed>)        = 0
[pid 15856] <... futex resumed>)        = 1
[pid 15857] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15857] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15857] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15856] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15856] exit_group(0)               = ?
[pid 15857] <... futex resumed>)        = ?
[pid 15857] +++ exited with 0 +++
[pid 15856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15858
./strace-static-x86_64: Process 15858 attached
[pid 15858] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15858] setpgid(0, 0)               = 0
[pid 15858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15858] write(3, "1000", 4)         = 4
[pid 15858] close(3executing program
)                    = 0
[pid 15858] write(1, "executing program\n", 18) = 18
[pid 15858] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15858] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15858] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15858] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15858] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15858] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15859 attached
 <unfinished ...>
[pid 15859] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15859] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15858] <... clone3 resumed> => {parent_tid=[15859]}, 88) = 15859
[pid 15858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15859] <... futex resumed>)        = 0
[pid 15858] <... futex resumed>)        = 1
[pid 15859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15859] <... futex resumed>)        = 0
[pid 15858] <... futex resumed>)        = 1
[pid 15859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15859] <... futex resumed>)        = 0
[pid 15858] <... futex resumed>)        = 1
[pid 15859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15859] <... futex resumed>)        = 0
[pid 15858] <... futex resumed>)        = 1
[pid 15858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15859] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15858] <... futex resumed>)        = 0
[pid 15859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15858] exit_group(0)               = ?
[pid 15859] <... futex resumed>)        = ?
[pid 15859] +++ exited with 0 +++
[pid 15858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15860
./strace-static-x86_64: Process 15860 attached
[pid 15860] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15860] setpgid(0, 0)               = 0
[pid 15860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15860] write(3, "1000", 4)         = 4
[pid 15860] close(3)                    = 0
executing program
[pid 15860] write(1, "executing program\n", 18) = 18
[pid 15860] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15860] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15860] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15860] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15861 attached
 <unfinished ...>
[pid 15861] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15860] <... clone3 resumed> => {parent_tid=[15861]}, 88) = 15861
[pid 15860] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15861] <... futex resumed>)        = 0
[pid 15860] <... futex resumed>)        = 1
[pid 15861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program
) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15861] <... futex resumed>)        = 0
[pid 15860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15860] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15861] <... futex resumed>)        = 0
[pid 15860] <... futex resumed>)        = 1
[pid 15861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15861] <... futex resumed>)        = 0
[pid 15860] <... futex resumed>)        = 1
[pid 15860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15861] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15860] <... futex resumed>)        = 0
[pid 15861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15860] exit_group(0)               = ?
[pid 15861] <... futex resumed>)        = ?
[pid 15861] +++ exited with 0 +++
[pid 15860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15862
./strace-static-x86_64: Process 15862 attached
[pid 15862] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15862] setpgid(0, 0)               = 0
[pid 15862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15862] write(3, "1000", 4)         = 4
[pid 15862] close(3)                    = 0
[pid 15862] write(1, "executing program\n", 18) = 18
[pid 15862] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15862] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15862] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15862] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15862] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15862] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15863 attached
 => {parent_tid=[15863]}, 88) = 15863
[pid 15863] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15863] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15862] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15863] <... futex resumed>)        = 0
[pid 15862] <... futex resumed>)        = 1
[pid 15863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15863] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15863] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15862] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15863] <... futex resumed>)        = 0
[pid 15862] <... futex resumed>)        = 1
[pid 15863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15863] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15863] <... futex resumed>)        = 0
[pid 15863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15863] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15862] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15863] <... futex resumed>)        = 0
[pid 15862] <... futex resumed>)        = 1
[pid 15863] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15863] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15863] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15862] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15862] exit_group(0)               = ?
[pid 15863] <... futex resumed>)        = ?
[pid 15863] +++ exited with 0 +++
[pid 15862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15864
./strace-static-x86_64: Process 15864 attached
[pid 15864] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15864] setpgid(0, 0)               = 0
[pid 15864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15864] write(3, "1000", 4)         = 4
[pid 15864] close(3executing program
)                    = 0
[pid 15864] write(1, "executing program\n", 18) = 18
[pid 15864] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15864] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15864] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15865 attached
 <unfinished ...>
[pid 15865] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15864] <... clone3 resumed> => {parent_tid=[15865]}, 88) = 15865
[pid 15864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15865] <... futex resumed>)        = 0
[pid 15864] <... futex resumed>)        = 1
[pid 15865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15865] <... futex resumed>)        = 0
[pid 15864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15864] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15865] <... futex resumed>)        = 0
[pid 15864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15864] <... futex resumed>)        = 0
[pid 15864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15865] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15864] <... futex resumed>)        = 0
[pid 15865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15865] <... futex resumed>)        = 0
[pid 15864] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15864] exit_group(0)               = ?
[pid 15865] <... futex resumed>)        = ?
[pid 15865] +++ exited with 0 +++
[pid 15864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15866
./strace-static-x86_64: Process 15866 attached
[pid 15866] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15866] setpgid(0, 0)               = 0
[pid 15866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15866] write(3, "1000", 4)         = 4
[pid 15866] close(3)                    = 0
[pid 15866] write(1, "executing program\n", 18executing program
) = 18
[pid 15866] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15866] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15866] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15866] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15866] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15866] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15867 attached
 <unfinished ...>
[pid 15867] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15866] <... clone3 resumed> => {parent_tid=[15867]}, 88) = 15867
[pid 15866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15867] <... futex resumed>)        = 0
[pid 15867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15867] <... futex resumed>)        = 0
[pid 15867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15867] <... futex resumed>)        = 0
[pid 15867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15867] <... futex resumed>)        = 0
[pid 15866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15866] <... futex resumed>)        = 0
[pid 15867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15866] exit_group(0)               = ?
[pid 15867] <... futex resumed>)        = ?
[pid 15867] +++ exited with 0 +++
[pid 15866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15868 attached
, child_tidptr=0x55557060c690) = 15868
[pid 15868] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15868] setpgid(0, 0)               = 0
[pid 15868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15868] write(3, "1000", 4)         = 4
[pid 15868] close(3)                    = 0
[pid 15868] write(1, "executing program\n", 18) = 18
[pid 15868] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15868] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15868] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15868] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15869]}, 88) = 15869
./strace-static-x86_64: Process 15869 attached
[pid 15868] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15869] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15869] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15868] <... futex resumed>)        = 0
[pid 15868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15868] <... futex resumed>)        = 0
[pid 15868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15868] <... futex resumed>)        = 0
[pid 15868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15869] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15868] <... futex resumed>)        = 0
[pid 15868] exit_group(0)               = ?
[pid 15869] +++ exited with 0 +++
[pid 15868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15870
./strace-static-x86_64: Process 15870 attached
[pid 15870] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15870] setpgid(0, 0)               = 0
[pid 15870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15870] write(3, "1000", 4)         = 4
[pid 15870] close(3)                    = 0
[pid 15870] write(1, "executing program\n", 18executing program
) = 18
[pid 15870] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15870] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15870] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15871 attached
 => {parent_tid=[15871]}, 88) = 15871
[pid 15871] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15871] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15871] <... futex resumed>)        = 0
[pid 15871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15871] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15871] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15870] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15871] <... futex resumed>)        = 0
[pid 15871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15871] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15870] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15871] <... futex resumed>)        = 0
[pid 15871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15871] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15870] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15871] <... futex resumed>)        = 0
[pid 15871] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15871] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15871] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15870] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15870] exit_group(0)               = ?
[pid 15871] <... futex resumed>)        = ?
[pid 15871] +++ exited with 0 +++
[pid 15870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15872
./strace-static-x86_64: Process 15872 attached
[pid 15872] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15872] setpgid(0, 0)               = 0
[pid 15872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15872] write(3, "1000", 4)         = 4
[pid 15872] close(3)                    = 0
executing program
[pid 15872] write(1, "executing program\n", 18) = 18
[pid 15872] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15872] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15872] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15873]}, 88) = 15873
[pid 15872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15873 attached
 <unfinished ...>
[pid 15873] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15873] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15872] <... futex resumed>)        = 0
[pid 15872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15872] <... futex resumed>)        = 0
[pid 15872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15872] <... futex resumed>)        = 0
[pid 15872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15872] <... futex resumed>)        = 0
[pid 15872] exit_group(0)               = ?
[pid 15873] +++ exited with 0 +++
[pid 15872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15874 attached
 <unfinished ...>
[pid 15874] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15874] setpgid(0, 0)               = 0
[pid 15874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15874
[pid 15874] <... openat resumed>)       = 3
[pid 15874] write(3, "1000", 4)         = 4
[pid 15874] close(3executing program
)                    = 0
[pid 15874] write(1, "executing program\n", 18) = 18
[pid 15874] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15874] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15874] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15874] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15875]}, 88) = 15875
[pid 15874] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15875 attached
 <unfinished ...>
[pid 15875] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15874] <... futex resumed>)        = 0
[pid 15874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15874] <... futex resumed>)        = 0
[pid 15874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15874] <... futex resumed>)        = 0
[pid 15874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15875] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15874] <... futex resumed>)        = 0
[pid 15874] exit_group(0)               = ?
[pid 15875] +++ exited with 0 +++
[pid 15874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15876 attached
 <unfinished ...>
[pid 15876] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15876] setpgid(0, 0)               = 0
[pid 15876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15876] write(3, "1000", 4)         = 4
[pid 15876] close(3)                    = 0
[pid 15876] write(1, "executing program\n", 18executing program
) = 18
[pid 15876] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15876] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15876] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15876] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15877]}, 88) = 15877
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15876
[pid 15876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15877 attached
 <unfinished ...>
[pid 15877] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15877] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15876] <... futex resumed>)        = 0
[pid 15876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15876] <... futex resumed>)        = 0
[pid 15876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15876] <... futex resumed>)        = 0
[pid 15876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15877] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15876] <... futex resumed>)        = 0
[pid 15876] exit_group(0)               = ?
[pid 15877] +++ exited with 0 +++
[pid 15876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15878 attached
 <unfinished ...>
[pid 15878] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15878
[pid 15878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15878] setpgid(0, 0)               = 0
[pid 15878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15878] write(3, "1000", 4)         = 4
[pid 15878] close(3)                    = 0
[pid 15878] write(1, "executing program\n", 18executing program
) = 18
[pid 15878] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15878] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15878] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15878] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15878] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15878] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15879]}, 88) = 15879
[pid 15878] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15879 attached
 <unfinished ...>
[pid 15879] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15878] <... futex resumed>)        = 0
[pid 15878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15878] <... futex resumed>)        = 0
[pid 15878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15878] <... futex resumed>)        = 0
[pid 15878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15879] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15878] <... futex resumed>)        = 0
[pid 15878] exit_group(0)               = ?
[pid 15879] +++ exited with 0 +++
[pid 15878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15880 attached
 <unfinished ...>
[pid 15880] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15880] setpgid(0, 0)               = 0
[pid 15880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15880
[pid 15880] <... openat resumed>)       = 3
[pid 15880] write(3, "1000", 4)         = 4
[pid 15880] close(3)                    = 0
[pid 15880] write(1, "executing program\n", 18executing program
) = 18
[pid 15880] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15880] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15880] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15880] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15881]}, 88) = 15881
[pid 15880] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15881 attached
 <unfinished ...>
[pid 15881] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15881] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15880] <... futex resumed>)        = 0
[pid 15880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15880] <... futex resumed>)        = 0
[pid 15880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15880] <... futex resumed>)        = 0
[pid 15880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15881] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15880] <... futex resumed>)        = 0
[pid 15880] exit_group(0)               = ?
[pid 15881] +++ exited with 0 +++
[pid 15880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15882 attached
, child_tidptr=0x55557060c690) = 15882
[pid 15882] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15882] setpgid(0, 0)               = 0
[pid 15882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15882] write(3, "1000", 4)         = 4
[pid 15882] close(3)                    = 0
[pid 15882] write(1, "executing program\n", 18executing program
) = 18
[pid 15882] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15882] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15882] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15882] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15882] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15882] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15883 attached
 <unfinished ...>
[pid 15883] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15883] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15883] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15882] <... clone3 resumed> => {parent_tid=[15883]}, 88) = 15883
[pid 15882] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15883] <... futex resumed>)        = 0
[pid 15882] <... futex resumed>)        = 1
[pid 15883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15883] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15883] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15882] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15883] <... futex resumed>)        = 0
[pid 15882] <... futex resumed>)        = 1
[pid 15883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15883] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15883] <... futex resumed>)        = 0
[pid 15883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15883] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15883] <... futex resumed>)        = 0
[pid 15883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15883] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15882] exit_group(0)               = ?
[pid 15883] <... futex resumed>)        = ?
[pid 15883] +++ exited with 0 +++
[pid 15882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15884
./strace-static-x86_64: Process 15884 attached
[pid 15884] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15884] setpgid(0, 0)               = 0
[pid 15884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15884] write(3, "1000", 4)         = 4
[pid 15884] close(3)                    = 0
[pid 15884] write(1, "executing program\n", 18executing program
) = 18
[pid 15884] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15884] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15884] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15884] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15885]}, 88) = 15885
[pid 15884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15885 attached
 <unfinished ...>
[pid 15885] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15884] <... futex resumed>)        = 0
[pid 15884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15884] <... futex resumed>)        = 0
[pid 15884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15884] <... futex resumed>)        = 0
[pid 15884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15885] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15884] <... futex resumed>)        = 0
[pid 15884] exit_group(0)               = ?
[pid 15885] +++ exited with 0 +++
[pid 15884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15886 attached
, child_tidptr=0x55557060c690) = 15886
[pid 15886] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15886] setpgid(0, 0)               = 0
[pid 15886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15886] write(3, "1000", 4)         = 4
[pid 15886] close(3)                    = 0
executing program
[pid 15886] write(1, "executing program\n", 18) = 18
[pid 15886] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15886] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15886] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15886] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15887 attached
 => {parent_tid=[15887]}, 88) = 15887
[pid 15887] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15887] <... futex resumed>)        = 0
[pid 15887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15887] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15886] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15887] <... futex resumed>)        = 0
[pid 15887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15886] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15887] <... futex resumed>)        = 0
[pid 15887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15887] <... futex resumed>)        = 0
[pid 15887] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15886] exit_group(0)               = ?
[pid 15887] <... futex resumed>)        = ?
[pid 15887] +++ exited with 0 +++
[pid 15886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15888
./strace-static-x86_64: Process 15888 attached
[pid 15888] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15888] setpgid(0, 0)               = 0
[pid 15888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15888] write(3, "1000", 4executing program
)         = 4
[pid 15888] close(3)                    = 0
[pid 15888] write(1, "executing program\n", 18) = 18
[pid 15888] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15888] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15888] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15888] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15888] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15888] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15889]}, 88) = 15889
[pid 15888] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15889 attached
 <unfinished ...>
[pid 15889] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15889] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15888] <... futex resumed>)        = 0
[pid 15888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15889] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15888] <... futex resumed>)        = 0
[pid 15888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15888] <... futex resumed>)        = 0
[pid 15888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15888] <... futex resumed>)        = 0
[pid 15888] exit_group(0)               = ?
[pid 15889] +++ exited with 0 +++
[pid 15888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15890 attached
 <unfinished ...>
[pid 15890] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15890
[pid 15890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15890] setpgid(0, 0)               = 0
[pid 15890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15890] write(3, "1000", 4)         = 4
[pid 15890] close(3)                    = 0
[pid 15890] write(1, "executing program\n", 18executing program
) = 18
[pid 15890] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15890] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15890] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15890] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15891 attached
 => {parent_tid=[15891]}, 88) = 15891
[pid 15891] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15890] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15891] <... futex resumed>)        = 0
[pid 15891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15891] <... futex resumed>)        = 0
[pid 15891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15891] <... futex resumed>)        = 0
[pid 15891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15891] <... futex resumed>)        = 0
[pid 15891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15890] exit_group(0)               = ?
[pid 15891] <... futex resumed>)        = ?
[pid 15891] +++ exited with 0 +++
[pid 15890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15892
./strace-static-x86_64: Process 15892 attached
[pid 15892] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15892] setpgid(0, 0)               = 0
[pid 15892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15892] write(3, "1000", 4)         = 4
[pid 15892] close(3)                    = 0
executing program
[pid 15892] write(1, "executing program\n", 18) = 18
[pid 15892] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15892] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15892] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15892] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15893 attached
 <unfinished ...>
[pid 15893] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15893] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15892] <... clone3 resumed> => {parent_tid=[15893]}, 88) = 15893
[pid 15892] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15893] <... futex resumed>)        = 0
[pid 15893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15893] <... futex resumed>)        = 0
[pid 15893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15892] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15893] <... futex resumed>)        = 0
[pid 15892] <... futex resumed>)        = 1
[pid 15893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15893] <... futex resumed>)        = 0
[pid 15892] <... futex resumed>)        = 1
[pid 15892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15892] <... futex resumed>)        = 0
[pid 15892] exit_group(0)               = ?
[pid 15893] <... futex resumed>)        = ?
[pid 15893] +++ exited with 0 +++
[pid 15892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15894
./strace-static-x86_64: Process 15894 attached
[pid 15894] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15894] setpgid(0, 0)               = 0
[pid 15894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15894] write(3, "1000", 4)         = 4
[pid 15894] close(3)                    = 0
[pid 15894] write(1, "executing program\n", 18executing program
) = 18
[pid 15894] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15894] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15894] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15894] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15895]}, 88) = 15895
[pid 15894] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15895 attached
 <unfinished ...>
[pid 15895] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15895] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15894] <... futex resumed>)        = 0
[pid 15894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15894] <... futex resumed>)        = 0
[pid 15894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15895] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15894] <... futex resumed>)        = 0
[pid 15894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15895] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15894] <... futex resumed>)        = 0
[pid 15894] exit_group(0)               = ?
[pid 15895] +++ exited with 0 +++
[pid 15894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15896
./strace-static-x86_64: Process 15896 attached
[pid 15896] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15896] setpgid(0, 0)               = 0
[pid 15896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15896] write(3, "1000", 4)         = 4
[pid 15896] close(3)                    = 0
[pid 15896] write(1, "executing program\n", 18executing program
) = 18
[pid 15896] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15896] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15896] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15896] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15897 attached
 => {parent_tid=[15897]}, 88) = 15897
[pid 15897] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15897] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15897] <... futex resumed>)        = 0
[pid 15897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15897] <... futex resumed>)        = 0
[pid 15896] <... futex resumed>)        = 1
[pid 15897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15897] <... futex resumed>)        = 0
[pid 15896] <... futex resumed>)        = 1
[pid 15897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15897] <... futex resumed>)        = 0
[pid 15897] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15897] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15896] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15896] exit_group(0)               = ?
[pid 15897] <... futex resumed>)        = ?
[pid 15897] +++ exited with 0 +++
[pid 15896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15898 attached
, child_tidptr=0x55557060c690) = 15898
[pid 15898] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15898] setpgid(0, 0)               = 0
[pid 15898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15898] write(3, "1000", 4)         = 4
[pid 15898] close(3)                    = 0
[pid 15898] write(1, "executing program\n", 18executing program
) = 18
[pid 15898] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15898] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15898] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15898] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15898] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15898] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15899 attached
 => {parent_tid=[15899]}, 88) = 15899
[pid 15898] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15899] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 15898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15899] <... set_robust_list resumed>) = 0
[pid 15899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15898] <... futex resumed>)        = 0
[pid 15898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15898] <... futex resumed>)        = 0
[pid 15898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15898] <... futex resumed>)        = 0
[pid 15898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15899] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15898] <... futex resumed>)        = 0
[pid 15898] exit_group(0)               = ?
[pid 15899] +++ exited with 0 +++
[pid 15898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15900
./strace-static-x86_64: Process 15900 attached
[pid 15900] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15900] setpgid(0, 0)               = 0
[pid 15900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15900] write(3, "1000", 4)         = 4
[pid 15900] close(3)                    = 0
[pid 15900] write(1, "executing program\n", 18executing program
) = 18
[pid 15900] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15900] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15900] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15900] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15900] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15900] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15901 attached
 => {parent_tid=[15901]}, 88) = 15901
[pid 15901] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15901] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15901] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15900] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15901] <... futex resumed>)        = 0
[pid 15900] <... futex resumed>)        = 1
[pid 15901] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15901] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15901] <... futex resumed>)        = 0
[pid 15900] <... futex resumed>)        = 1
[pid 15901] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15901] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULLexecuting program
 <unfinished ...>
[pid 15900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15901] <... futex resumed>)        = 0
[pid 15900] <... futex resumed>)        = 1
[pid 15901] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15901] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15901] <... futex resumed>)        = 0
[pid 15901] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15901] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15901] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15900] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15900] exit_group(0)               = ?
[pid 15901] <... futex resumed>)        = ?
[pid 15901] +++ exited with 0 +++
[pid 15900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15902
./strace-static-x86_64: Process 15902 attached
[pid 15902] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15902] setpgid(0, 0)               = 0
[pid 15902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15902] write(3, "1000", 4)         = 4
[pid 15902] close(3)                    = 0
[pid 15902] write(1, "executing program\n", 18) = 18
[pid 15902] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15902] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15902] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15902] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15902] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15902] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15903]}, 88) = 15903
./strace-static-x86_64: Process 15903 attached
[pid 15902] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15903] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15903] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15903] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15902] <... futex resumed>)        = 0
[pid 15902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15903] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15902] <... futex resumed>)        = 0
[pid 15902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15903] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15902] <... futex resumed>)        = 0
[pid 15902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15903] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15902] <... futex resumed>)        = 0
[pid 15902] exit_group(0)               = ?
[pid 15903] +++ exited with 0 +++
[pid 15902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15904 attached
 <unfinished ...>
[pid 15904] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15904] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15904
[pid 15904] <... setpgid resumed>)      = 0
[pid 15904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15904] write(3, "1000", 4)         = 4
[pid 15904] close(3)                    = 0
[pid 15904] write(1, "executing program\n", 18executing program
) = 18
[pid 15904] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15904] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15904] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15904] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15904] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15904] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15905]}, 88) = 15905
[pid 15904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15905 attached
 <unfinished ...>
[pid 15905] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15905] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15904] <... futex resumed>)        = 0
[pid 15904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15905] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15904] <... futex resumed>)        = 0
[pid 15904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15905] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15904] <... futex resumed>)        = 0
[pid 15904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15905] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15904] <... futex resumed>)        = 0
[pid 15904] exit_group(0)               = ?
[pid 15905] +++ exited with 0 +++
[pid 15904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15906 attached
 <unfinished ...>
[pid 15906] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15906] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15906
[pid 15906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15906] write(3, "1000", 4)         = 4
[pid 15906] close(3)                    = 0
[pid 15906] write(1, "executing program\n", 18executing program
) = 18
[pid 15906] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15906] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15906] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15906] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15907 attached
 => {parent_tid=[15907]}, 88) = 15907
[pid 15907] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15907] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15907] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15906] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15907] <... futex resumed>)        = 0
[pid 15907] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15907] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15907] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15906] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15907] <... futex resumed>)        = 0
[pid 15907] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15907] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15907] <... futex resumed>)        = 0
[pid 15907] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15907] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15907] <... futex resumed>)        = 0
[pid 15907] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15907] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15906] exit_group(0)               = ?
[pid 15907] <... futex resumed>)        = ?
[pid 15907] +++ exited with 0 +++
[pid 15906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15908
./strace-static-x86_64: Process 15908 attached
[pid 15908] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15908] setpgid(0, 0)               = 0
[pid 15908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15908] write(3, "1000", 4)         = 4
[pid 15908] close(3)                    = 0
[pid 15908] write(1, "executing program\n", 18executing program
) = 18
[pid 15908] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15908] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15908] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15908] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15909 attached
 => {parent_tid=[15909]}, 88) = 15909
[pid 15909] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15908] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15909] <... futex resumed>)        = 0
[pid 15909] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15909] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15908] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15909] <... futex resumed>)        = 0
[pid 15909] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15909] <... futex resumed>)        = 0
[pid 15909] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15909] <... futex resumed>)        = 0
[pid 15909] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15908] exit_group(0)               = ?
[pid 15909] <... futex resumed>)        = ?
[pid 15909] +++ exited with 0 +++
[pid 15908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15910
./strace-static-x86_64: Process 15910 attached
[pid 15910] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15910] setpgid(0, 0)               = 0
[pid 15910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15910] write(3, "1000", 4)         = 4
[pid 15910] close(3)                    = 0
executing program
[pid 15910] write(1, "executing program\n", 18) = 18
[pid 15910] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15910] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15910] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15910] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15911 attached
 => {parent_tid=[15911]}, 88) = 15911
[pid 15911] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15911] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15910] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15911] <... futex resumed>)        = 0
[pid 15911] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15911] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15911] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15911] <... futex resumed>)        = 0
[pid 15911] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15911] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15911] <... futex resumed>)        = 0
[pid 15911] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15911] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15911] <... futex resumed>)        = 0
[pid 15911] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15911] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15911] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15910] exit_group(0)               = ?
[pid 15911] <... futex resumed>)        = ?
[pid 15911] +++ exited with 0 +++
[pid 15910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15912
./strace-static-x86_64: Process 15912 attached
[pid 15912] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15912] setpgid(0, 0)               = 0
[pid 15912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15912] write(3, "1000", 4)         = 4
[pid 15912] close(3executing program
)                    = 0
[pid 15912] write(1, "executing program\n", 18) = 18
[pid 15912] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15912] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15912] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15912] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15913 attached
 <unfinished ...>
[pid 15913] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15913] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15912] <... clone3 resumed> => {parent_tid=[15913]}, 88) = 15913
[pid 15912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15913] <... futex resumed>)        = 0
[pid 15913] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15913] <... futex resumed>)        = 0
[pid 15912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15913] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15913] <... futex resumed>)        = 0
[pid 15912] <... futex resumed>)        = 1
[pid 15913] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15913] <... futex resumed>)        = 0
[pid 15912] <... futex resumed>)        = 1
[pid 15912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15913] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15912] <... futex resumed>)        = 0
[pid 15913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15912] exit_group(0)               = ?
[pid 15913] <... futex resumed>)        = ?
[pid 15913] +++ exited with 0 +++
[pid 15912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15914
./strace-static-x86_64: Process 15914 attached
[pid 15914] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15914] setpgid(0, 0)               = 0
[pid 15914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15914] write(3, "1000", 4)         = 4
[pid 15914] close(3)                    = 0
executing program
[pid 15914] write(1, "executing program\n", 18) = 18
[pid 15914] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15914] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15914] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15914] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15914] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15914] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15915 attached
 <unfinished ...>
[pid 15915] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15915] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15914] <... clone3 resumed> => {parent_tid=[15915]}, 88) = 15915
[pid 15914] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15915] <... futex resumed>)        = 0
[pid 15914] <... futex resumed>)        = 1
[pid 15915] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15915] <... futex resumed>)        = 0
[pid 15914] <... futex resumed>)        = 1
[pid 15915] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15915] <... futex resumed>)        = 0
[pid 15914] <... futex resumed>)        = 1
[pid 15915] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15915] <... futex resumed>)        = 0
[pid 15914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15915] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15914] <... futex resumed>)        = 0
[pid 15914] exit_group(0)               = ?
[pid 15915] <... futex resumed>)        = ?
[pid 15915] +++ exited with 0 +++
[pid 15914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15916
./strace-static-x86_64: Process 15916 attached
[pid 15916] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15916] setpgid(0, 0)               = 0
[pid 15916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15916] write(3, "1000", 4)         = 4
[pid 15916] close(3executing program
)                    = 0
[pid 15916] write(1, "executing program\n", 18) = 18
[pid 15916] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15916] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15916] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15916] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15916] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15916] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15917 attached
 => {parent_tid=[15917]}, 88) = 15917
[pid 15917] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15916] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15917] <... futex resumed>)        = 0
[pid 15916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15917] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15916] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15917] <... futex resumed>)        = 0
[pid 15917] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15916] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15917] <... futex resumed>)        = 0
[pid 15917] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15917] <... futex resumed>)        = 0
[pid 15916] <... futex resumed>)        = 1
[pid 15916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15917] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15916] <... futex resumed>)        = 0
[pid 15917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15916] exit_group(0)               = ?
[pid 15917] <... futex resumed>)        = ?
[pid 15917] +++ exited with 0 +++
[pid 15916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15918
./strace-static-x86_64: Process 15918 attached
[pid 15918] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15918] setpgid(0, 0)               = 0
[pid 15918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15918] write(3, "1000", 4)         = 4
[pid 15918] close(3executing program
)                    = 0
[pid 15918] write(1, "executing program\n", 18) = 18
[pid 15918] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15918] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15918] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15918] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15918] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15918] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15919 attached
 <unfinished ...>
[pid 15919] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15918] <... clone3 resumed> => {parent_tid=[15919]}, 88) = 15919
[pid 15918] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15919] <... futex resumed>)        = 0
[pid 15918] <... futex resumed>)        = 1
[pid 15919] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15919] <... futex resumed>)        = 0
[pid 15918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15919] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15918] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15919] <... futex resumed>)        = 0
[pid 15918] <... futex resumed>)        = 1
[pid 15919] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15919] <... futex resumed>)        = 0
[pid 15918] <... futex resumed>)        = 1
[pid 15918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15919] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15918] <... futex resumed>)        = 0
[pid 15918] exit_group(0)               = ?
[pid 15919] <... futex resumed>)        = ?
[pid 15919] +++ exited with 0 +++
[pid 15918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15920
./strace-static-x86_64: Process 15920 attached
[pid 15920] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15920] setpgid(0, 0)               = 0
[pid 15920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15920] write(3, "1000", 4)         = 4
[pid 15920] close(3)                    = 0
executing program
[pid 15920] write(1, "executing program\n", 18) = 18
[pid 15920] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15920] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15920] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15921 attached
 <unfinished ...>
[pid 15921] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15921] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15921] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15920] <... clone3 resumed> => {parent_tid=[15921]}, 88) = 15921
[pid 15920] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15921] <... futex resumed>)        = 0
[pid 15921] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15921] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15921] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15920] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15921] <... futex resumed>)        = 0
[pid 15921] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15921] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15920] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15921] <... futex resumed>)        = 0
[pid 15921] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15921] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15920] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15921] <... futex resumed>)        = 0
[pid 15920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15921] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15920] <... futex resumed>)        = 0
[pid 15921] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15920] exit_group(0)               = ?
[pid 15921] <... futex resumed>)        = ?
[pid 15921] +++ exited with 0 +++
[pid 15920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15922
./strace-static-x86_64: Process 15922 attached
[pid 15922] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15922] setpgid(0, 0)               = 0
[pid 15922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15922] write(3, "1000", 4)         = 4
[pid 15922] close(3)                    = 0
[pid 15922] write(1, "executing program\n", 18executing program
) = 18
[pid 15922] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15922] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15922] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15922] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15923 attached
 <unfinished ...>
[pid 15923] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15923] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15922] <... clone3 resumed> => {parent_tid=[15923]}, 88) = 15923
[pid 15922] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15923] <... futex resumed>)        = 0
[pid 15922] <... futex resumed>)        = 1
[pid 15923] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15923] <... futex resumed>)        = 0
[pid 15922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15923] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15922] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15923] <... futex resumed>)        = 0
[pid 15923] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15923] <... futex resumed>)        = 0
[pid 15922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15923] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15922] <... futex resumed>)        = 0
[pid 15923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15922] exit_group(0)               = ?
[pid 15923] <... futex resumed>)        = ?
[pid 15923] +++ exited with 0 +++
[pid 15922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15924
./strace-static-x86_64: Process 15924 attached
[pid 15924] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15924] setpgid(0, 0)               = 0
[pid 15924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15924] write(3, "1000", 4)         = 4
[pid 15924] close(3)                    = 0
executing program
[pid 15924] write(1, "executing program\n", 18) = 18
[pid 15924] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15924] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15924] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15924] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15925 attached
 => {parent_tid=[15925]}, 88) = 15925
[pid 15925] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15925] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15924] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15925] <... futex resumed>)        = 0
[pid 15924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15925] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15924] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15925] <... futex resumed>)        = 0
[pid 15925] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15924] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15925] <... futex resumed>)        = 0
[pid 15925] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15925] <... futex resumed>)        = 0
[pid 15924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15925] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15924] <... futex resumed>)        = 0
[pid 15924] exit_group(0)               = ?
[pid 15925] <... futex resumed>)        = ?
[pid 15925] +++ exited with 0 +++
[pid 15924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15926
./strace-static-x86_64: Process 15926 attached
[pid 15926] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15926] setpgid(0, 0)               = 0
[pid 15926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15926] write(3, "1000", 4)         = 4
[pid 15926] close(3)                    = 0
executing program
[pid 15926] write(1, "executing program\n", 18) = 18
[pid 15926] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15926] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15926] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15926] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15926] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15926] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15927 attached
 <unfinished ...>
[pid 15927] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15927] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15926] <... clone3 resumed> => {parent_tid=[15927]}, 88) = 15927
[pid 15926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15927] <... futex resumed>)        = 0
[pid 15926] <... futex resumed>)        = 1
[pid 15927] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15927] <... futex resumed>)        = 0
[pid 15926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15927] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15926] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15927] <... futex resumed>)        = 0
[pid 15926] <... futex resumed>)        = 1
[pid 15927] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15927] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15926] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15927] <... futex resumed>)        = 0
[pid 15926] <... futex resumed>)        = 1
[pid 15926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15927] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15926] <... futex resumed>)        = 0
[pid 15927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15926] exit_group(0)               = ?
[pid 15927] <... futex resumed>)        = ?
[pid 15927] +++ exited with 0 +++
[pid 15926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15928
./strace-static-x86_64: Process 15928 attached
[pid 15928] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15928] setpgid(0, 0)               = 0
[pid 15928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15928] write(3, "1000", 4)         = 4
[pid 15928] close(3executing program
)                    = 0
[pid 15928] write(1, "executing program\n", 18) = 18
[pid 15928] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15928] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15928] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15928] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15928] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15928] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15928] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15929 attached
 => {parent_tid=[15929]}, 88) = 15929
[pid 15929] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15929] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15929] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15928] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15929] <... futex resumed>)        = 0
[pid 15928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15929] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15929] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15928] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15929] <... futex resumed>)        = 0
[pid 15928] <... futex resumed>)        = 1
[pid 15929] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15929] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15929] <... futex resumed>)        = 0
[pid 15928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15929] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15929] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15928] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15929] <... futex resumed>)        = 0
[pid 15928] <... futex resumed>)        = 1
[pid 15929] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15929] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15928] exit_group(0)               = ?
[pid 15929] <... futex resumed>)        = ?
[pid 15929] +++ exited with 0 +++
[pid 15928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15930
./strace-static-x86_64: Process 15930 attached
[pid 15930] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15930] setpgid(0, 0)               = 0
[pid 15930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15930] write(3, "1000", 4)         = 4
[pid 15930] close(3)                    = 0
[pid 15930] write(1, "executing program\n", 18executing program
) = 18
[pid 15930] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15930] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15930] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15930] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15931]}, 88) = 15931
[pid 15930] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15931 attached
 <unfinished ...>
[pid 15931] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15931] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15930] <... futex resumed>)        = 0
[pid 15930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15931] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15930] <... futex resumed>)        = 0
[pid 15930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15931] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15930] <... futex resumed>)        = 0
[pid 15930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15931] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15930] <... futex resumed>)        = 0
[pid 15930] exit_group(0 <unfinished ...>
[pid 15931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15930] <... exit_group resumed>)   = ?
[pid 15931] <... futex resumed>)        = ?
[pid 15931] +++ exited with 0 +++
[pid 15930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15932
./strace-static-x86_64: Process 15932 attached
[pid 15932] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15932] setpgid(0, 0)               = 0
[pid 15932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15932] write(3, "1000", 4)         = 4
[pid 15932] close(3)                    = 0
[pid 15932] write(1, "executing program\n", 18executing program
) = 18
[pid 15932] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15932] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15932] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15932] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15933 attached
 => {parent_tid=[15933]}, 88) = 15933
[pid 15933] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15933] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15933] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15932] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15933] <... futex resumed>)        = 0
[pid 15933] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15933] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15933] <... futex resumed>)        = 0
[pid 15933] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15933] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15933] <... futex resumed>)        = 0
[pid 15933] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15933] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15932] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15933] <... futex resumed>)        = 0
[pid 15932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15933] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15932] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15933] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15932] exit_group(0)               = ?
[pid 15933] <... futex resumed>)        = ?
[pid 15933] +++ exited with 0 +++
[pid 15932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15934 attached
, child_tidptr=0x55557060c690) = 15934
[pid 15934] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15934] setpgid(0, 0)               = 0
[pid 15934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15934] write(3, "1000", 4)         = 4
[pid 15934] close(3)                    = 0
[pid 15934] write(1, "executing program\n", 18executing program
) = 18
[pid 15934] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15934] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15934] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15934] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15935]}, 88) = 15935
[pid 15934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15935 attached
 <unfinished ...>
[pid 15935] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15935] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15934] <... futex resumed>)        = 0
[pid 15935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15935] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15935] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15934] <... futex resumed>)        = 0
[pid 15934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15935] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15934] <... futex resumed>)        = 0
[pid 15934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15935] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15934] <... futex resumed>)        = 0
[pid 15934] exit_group(0)               = ?
[pid 15935] +++ exited with 0 +++
[pid 15934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15936 attached
 <unfinished ...>
[pid 15936] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15936] setpgid(0, 0)               = 0
[pid 15936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15936
[pid 15936] <... openat resumed>)       = 3
[pid 15936] write(3, "1000", 4)         = 4
[pid 15936] close(3executing program
)                    = 0
[pid 15936] write(1, "executing program\n", 18) = 18
[pid 15936] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15936] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15936] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15936] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15936] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15936] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15937 attached
 <unfinished ...>
[pid 15937] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15937] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15936] <... clone3 resumed> => {parent_tid=[15937]}, 88) = 15937
[pid 15936] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15937] <... futex resumed>)        = 0
[pid 15937] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15937] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15937] <... futex resumed>)        = 0
[pid 15937] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15937] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15937] <... futex resumed>)        = 0
[pid 15937] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15937] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15937] <... futex resumed>)        = 0
[pid 15937] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15937] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15937] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15936] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15936] exit_group(0)               = ?
[pid 15937] <... futex resumed>)        = ?
[pid 15937] +++ exited with 0 +++
[pid 15936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15938
./strace-static-x86_64: Process 15938 attached
[pid 15938] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15938] setpgid(0, 0)               = 0
[pid 15938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15938] write(3, "1000", 4)         = 4
executing program
[pid 15938] close(3)                    = 0
[pid 15938] write(1, "executing program\n", 18) = 18
[pid 15938] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15938] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15938] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15938] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15938] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15938] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15939]}, 88) = 15939
./strace-static-x86_64: Process 15939 attached
[pid 15938] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15939] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15939] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15938] <... futex resumed>)        = 0
[pid 15938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15939] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15938] <... futex resumed>)        = 0
[pid 15938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15939] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15938] <... futex resumed>)        = 0
[pid 15938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15939] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15938] <... futex resumed>)        = 0
[pid 15938] exit_group(0)               = ?
[pid 15939] +++ exited with 0 +++
[pid 15938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15940 attached
 <unfinished ...>
[pid 15940] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15940
[pid 15940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15940] setpgid(0, 0)               = 0
[pid 15940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15940] write(3, "1000", 4executing program
)         = 4
[pid 15940] close(3)                    = 0
[pid 15940] write(1, "executing program\n", 18) = 18
[pid 15940] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15940] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15940] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15940] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15940] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15940] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15940] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15941]}, 88) = 15941
[pid 15940] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15941 attached
 <unfinished ...>
[pid 15941] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15941] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15941] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15940] <... futex resumed>)        = 0
[pid 15940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15941] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15940] <... futex resumed>)        = 0
[pid 15940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15941] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15940] <... futex resumed>)        = 0
[pid 15940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15941] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15940] <... futex resumed>)        = 0
[pid 15940] exit_group(0)               = ?
[pid 15941] +++ exited with 0 +++
[pid 15940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15942
./strace-static-x86_64: Process 15942 attached
[pid 15942] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15942] setpgid(0, 0)               = 0
[pid 15942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15942] write(3, "1000", 4)         = 4
[pid 15942] close(3)                    = 0
executing program
[pid 15942] write(1, "executing program\n", 18) = 18
[pid 15942] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15942] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15942] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15942] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15942] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15942] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15943 attached
 => {parent_tid=[15943]}, 88) = 15943
[pid 15943] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15943] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15942] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15943] <... futex resumed>)        = 0
[pid 15943] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15943] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15943] <... futex resumed>)        = 0
[pid 15943] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15943] <... futex resumed>)        = 0
[pid 15943] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15943] <... futex resumed>)        = 0
[pid 15943] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15942] exit_group(0)               = ?
[pid 15943] <... futex resumed>)        = ?
[pid 15943] +++ exited with 0 +++
[pid 15942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15944 attached
, child_tidptr=0x55557060c690) = 15944
[pid 15944] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15944] setpgid(0, 0)               = 0
[pid 15944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15944] write(3, "1000", 4)         = 4
[pid 15944] close(3)                    = 0
[pid 15944] write(1, "executing program\n", 18executing program
) = 18
[pid 15944] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15944] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15944] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15944] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15944] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15944] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15945]}, 88) = 15945
[pid 15944] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15945 attached
 <unfinished ...>
[pid 15945] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15945] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15945] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15944] <... futex resumed>)        = 0
[pid 15944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15945] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15944] <... futex resumed>)        = 0
[pid 15944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15945] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15944] <... futex resumed>)        = 0
[pid 15944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15945] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15944] <... futex resumed>)        = 0
[pid 15944] exit_group(0)               = ?
[pid 15945] +++ exited with 0 +++
[pid 15944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15946 attached
 <unfinished ...>
[pid 15946] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15946] setpgid(0, 0)               = 0
[pid 15946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15946
[pid 15946] <... openat resumed>)       = 3
[pid 15946] write(3, "1000", 4)         = 4
[pid 15946] close(3)                    = 0
executing program
[pid 15946] write(1, "executing program\n", 18) = 18
[pid 15946] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15946] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15946] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15946] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15946] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15946] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15946] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15947]}, 88) = 15947
[pid 15946] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15947 attached
 <unfinished ...>
[pid 15947] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15947] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15947] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15946] <... futex resumed>)        = 0
[pid 15946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15947] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15946] <... futex resumed>)        = 0
[pid 15946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15947] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15946] <... futex resumed>)        = 0
[pid 15946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15947] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15946] <... futex resumed>)        = 0
[pid 15946] exit_group(0)               = ?
[pid 15947] +++ exited with 0 +++
[pid 15946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15948 attached
 <unfinished ...>
[pid 15948] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15948] setpgid(0, 0)               = 0
[pid 15948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15948] write(3, "1000", 4)         = 4
[pid 15948] close(3)                    = 0
executing program
[pid 15948] write(1, "executing program\n", 18) = 18
[pid 15948] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15948] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15948] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15948
[pid 15948] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15949]}, 88) = 15949
[pid 15948] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15949 attached
 <unfinished ...>
[pid 15949] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15949] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15949] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15948] <... futex resumed>)        = 0
[pid 15948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15949] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15948] <... futex resumed>)        = 0
[pid 15948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15949] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15948] <... futex resumed>)        = 0
[pid 15948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15949] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15948] <... futex resumed>)        = 0
[pid 15948] exit_group(0)               = ?
[pid 15949] +++ exited with 0 +++
[pid 15948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15950
./strace-static-x86_64: Process 15950 attached
[pid 15950] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15950] setpgid(0, 0)               = 0
[pid 15950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15950] write(3, "1000", 4)         = 4
[pid 15950] close(3)                    = 0
executing program
[pid 15950] write(1, "executing program\n", 18) = 18
[pid 15950] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15950] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15950] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15951]}, 88) = 15951
[pid 15950] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15951 attached
 <unfinished ...>
[pid 15951] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15951] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15951] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15950] <... futex resumed>)        = 0
[pid 15950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15951] <... futex resumed>)        = 1
[pid 15951] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15950] <... futex resumed>)        = 0
[pid 15950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15951] <... futex resumed>)        = 1
[pid 15951] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15950] <... futex resumed>)        = 0
[pid 15950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15951] <... futex resumed>)        = 1
[pid 15951] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15950] <... futex resumed>)        = 0
[pid 15950] exit_group(0)               = ?
[pid 15951] <... futex resumed>)        = ?
[pid 15951] +++ exited with 0 +++
[pid 15950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15952
./strace-static-x86_64: Process 15952 attached
[pid 15952] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15952] setpgid(0, 0)               = 0
[pid 15952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15952] write(3, "1000", 4)         = 4
[pid 15952] close(3)                    = 0
[pid 15952] write(1, "executing program\n", 18executing program
) = 18
[pid 15952] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15952] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15952] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15952] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15952] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15952] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15953]}, 88) = 15953
[pid 15952] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15953 attached
 <unfinished ...>
[pid 15953] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15953] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15953] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15952] <... futex resumed>)        = 0
[pid 15952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15953] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15952] <... futex resumed>)        = 0
[pid 15952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15953] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15952] <... futex resumed>)        = 0
[pid 15952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15953] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15952] <... futex resumed>)        = 0
[pid 15952] exit_group(0)               = ?
[pid 15953] +++ exited with 0 +++
[pid 15952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15954 attached
 <unfinished ...>
[pid 15954] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15954] setpgid(0, 0)               = 0
[pid 15954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15954
[pid 15954] <... openat resumed>)       = 3
[pid 15954] write(3, "1000", 4)         = 4
[pid 15954] close(3)                    = 0
executing program
[pid 15954] write(1, "executing program\n", 18) = 18
[pid 15954] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15954] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15954] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15954] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15954] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15954] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15955 attached
 => {parent_tid=[15955]}, 88) = 15955
[pid 15954] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15955] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15955] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15955] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15954] <... futex resumed>)        = 0
[pid 15954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15955] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15954] <... futex resumed>)        = 0
[pid 15954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15955] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15954] <... futex resumed>)        = 0
[pid 15954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15955] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15954] <... futex resumed>)        = 0
[pid 15954] exit_group(0)               = ?
[pid 15955] +++ exited with 0 +++
[pid 15954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15956 attached
, child_tidptr=0x55557060c690) = 15956
[pid 15956] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15956] setpgid(0, 0)               = 0
[pid 15956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15956] write(3, "1000", 4)         = 4
[pid 15956] close(3)                    = 0
[pid 15956] write(1, "executing program\n", 18executing program
) = 18
[pid 15956] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15956] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15956] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15956] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15956] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15956] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15957 attached
 => {parent_tid=[15957]}, 88) = 15957
[pid 15957] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15957] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15957] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15956] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15957] <... futex resumed>)        = 0
[pid 15956] <... futex resumed>)        = 1
[pid 15957] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15957] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15957] <... futex resumed>)        = 0
[pid 15957] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15957] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15957] <... futex resumed>)        = 0
[pid 15957] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15957] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15957] <... futex resumed>)        = 0
[pid 15957] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15957] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15957] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15956] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15956] exit_group(0)               = ?
[pid 15957] <... futex resumed>)        = ?
[pid 15957] +++ exited with 0 +++
[pid 15956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15958
./strace-static-x86_64: Process 15958 attached
[pid 15958] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15958] setpgid(0, 0)               = 0
[pid 15958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15958] write(3, "1000", 4)         = 4
[pid 15958] close(3)                    = 0
[pid 15958] write(1, "executing program\n", 18executing program
) = 18
[pid 15958] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15958] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15958] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15958] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15958] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15958] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15959 attached
 => {parent_tid=[15959]}, 88) = 15959
[pid 15959] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15959] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15958] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15959] <... futex resumed>)        = 0
[pid 15958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15959] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15958] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15959] <... futex resumed>)        = 0
[pid 15958] <... futex resumed>)        = 1
[pid 15959] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15959] <... futex resumed>)        = 0
[pid 15958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15959] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15958] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15959] <... futex resumed>)        = 0
[pid 15958] <... futex resumed>)        = 1
[pid 15959] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15958] exit_group(0)               = ?
[pid 15959] <... futex resumed>)        = ?
[pid 15959] +++ exited with 0 +++
[pid 15958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15960
./strace-static-x86_64: Process 15960 attached
[pid 15960] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15960] setpgid(0, 0)               = 0
[pid 15960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15960] write(3, "1000", 4)         = 4
[pid 15960] close(3)                    = 0
[pid 15960] write(1, "executing program\n", 18executing program
) = 18
[pid 15960] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15960] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15960] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15960] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15961 attached
 => {parent_tid=[15961]}, 88) = 15961
[pid 15961] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15961] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15960] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15961] <... futex resumed>)        = 0
[pid 15961] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15961] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15960] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15961] <... futex resumed>)        = 0
[pid 15961] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15961] <... futex resumed>)        = 0
[pid 15961] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15961] <... futex resumed>)        = 0
[pid 15961] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15960] exit_group(0)               = ?
[pid 15961] <... futex resumed>)        = ?
[pid 15961] +++ exited with 0 +++
[pid 15960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15962 attached
, child_tidptr=0x55557060c690) = 15962
[pid 15962] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15962] setpgid(0, 0)               = 0
[pid 15962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15962] write(3, "1000", 4)         = 4
[pid 15962] close(3)                    = 0
[pid 15962] write(1, "executing program\n", 18executing program
) = 18
[pid 15962] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15962] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15962] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15962] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15963]}, 88) = 15963
[pid 15962] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15963 attached
 <unfinished ...>
[pid 15963] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15963] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15963] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15962] <... futex resumed>)        = 0
[pid 15962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15963] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15962] <... futex resumed>)        = 0
[pid 15962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15963] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15962] <... futex resumed>)        = 0
[pid 15962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15963] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15962] <... futex resumed>)        = 0
[pid 15962] exit_group(0)               = ?
[pid 15963] +++ exited with 0 +++
[pid 15962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15964 attached
, child_tidptr=0x55557060c690) = 15964
[pid 15964] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15964] setpgid(0, 0)               = 0
[pid 15964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15964] write(3, "1000", 4)         = 4
[pid 15964] close(3)                    = 0
[pid 15964] write(1, "executing program\n", 18executing program
) = 18
[pid 15964] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15964] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15964] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15964] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15964] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15964] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15965 attached
 => {parent_tid=[15965]}, 88) = 15965
[pid 15965] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15964] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15965] <... futex resumed>)        = 0
[pid 15965] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15965] <... futex resumed>)        = 0
[pid 15965] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15965] <... futex resumed>)        = 0
[pid 15965] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15965] <... futex resumed>)        = 0
[pid 15965] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15964] exit_group(0)               = ?
[pid 15965] <... futex resumed>)        = ?
[pid 15965] +++ exited with 0 +++
[pid 15964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15966 attached
, child_tidptr=0x55557060c690) = 15966
[pid 15966] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15966] setpgid(0, 0)               = 0
[pid 15966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15966] write(3, "1000", 4)         = 4
[pid 15966] close(3)                    = 0
executing program
[pid 15966] write(1, "executing program\n", 18) = 18
[pid 15966] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15966] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15966] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15966] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15966] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15966] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15967 attached
 => {parent_tid=[15967]}, 88) = 15967
[pid 15967] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15967] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15967] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15966] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15967] <... futex resumed>)        = 0
[pid 15967] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15967] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15967] <... futex resumed>)        = 0
[pid 15966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15967] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15966] <... futex resumed>)        = 0
[pid 15967] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 15966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15967] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 15966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15966] <... futex resumed>)        = 0
[pid 15966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15967] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15966] <... futex resumed>)        = 0
[pid 15967] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15966] exit_group(0)               = ?
[pid 15967] <... futex resumed>)        = ?
[pid 15967] +++ exited with 0 +++
[pid 15966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15968 attached
, child_tidptr=0x55557060c690) = 15968
[pid 15968] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15968] setpgid(0, 0)               = 0
[pid 15968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15968] write(3, "1000", 4)         = 4
[pid 15968] close(3)                    = 0
[pid 15968] write(1, "executing program\n", 18executing program
) = 18
[pid 15968] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15968] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15968] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15968] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15968] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15968] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15969]}, 88) = 15969
[pid 15968] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15969 attached
 <unfinished ...>
[pid 15969] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15969] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15969] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15968] <... futex resumed>)        = 0
[pid 15968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15969] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15968] <... futex resumed>)        = 0
[pid 15968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15969] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15968] <... futex resumed>)        = 0
[pid 15968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15969] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15968] <... futex resumed>)        = 0
[pid 15968] exit_group(0)               = ?
[pid 15969] +++ exited with 0 +++
[pid 15968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15970 attached
 <unfinished ...>
[pid 15970] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15970] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15970
[pid 15970] <... prctl resumed>)        = 0
[pid 15970] setpgid(0, 0)               = 0
[pid 15970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15970] write(3, "1000", 4)         = 4
[pid 15970] close(3)                    = 0
[pid 15970] write(1, "executing program\n", 18executing program
) = 18
[pid 15970] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15970] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15970] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15970] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15971 attached
 => {parent_tid=[15971]}, 88) = 15971
[pid 15971] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15970] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 15971] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15970] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 15970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15971] <... futex resumed>)        = 0
[pid 15971] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15971] <... futex resumed>)        = 0
[pid 15971] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15971] <... futex resumed>)        = 0
[pid 15971] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15971] <... futex resumed>)        = 0
[pid 15970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15971] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15970] <... futex resumed>)        = 0
[pid 15970] exit_group(0)               = ?
[pid 15971] <... futex resumed>)        = ?
[pid 15971] +++ exited with 0 +++
[pid 15970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15972 attached
, child_tidptr=0x55557060c690) = 15972
[pid 15972] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15972] setpgid(0, 0)               = 0
[pid 15972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15972] write(3, "1000", 4)         = 4
[pid 15972] close(3)                    = 0
[pid 15972] write(1, "executing program\n", 18executing program
) = 18
[pid 15972] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15972] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15972] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15972] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15973 attached
 => {parent_tid=[15973]}, 88) = 15973
[pid 15973] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15973] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15973] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15972] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15973] <... futex resumed>)        = 0
[pid 15972] <... futex resumed>)        = 1
[pid 15973] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15973] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15973] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15972] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15973] <... futex resumed>)        = 0
[pid 15972] <... futex resumed>)        = 1
[pid 15973] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 15972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15973] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 15973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15973] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15972] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15973] <... futex resumed>)        = 0
[pid 15972] <... futex resumed>)        = 1
[pid 15973] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15973] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15972] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15973] <... futex resumed>)        = 0
[pid 15972] <... futex resumed>)        = 1
[pid 15973] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15973] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15973] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15972] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15972] exit_group(0)               = ?
[pid 15973] <... futex resumed>)        = ?
[pid 15973] +++ exited with 0 +++
[pid 15972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15974
./strace-static-x86_64: Process 15974 attached
[pid 15974] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15974] setpgid(0, 0)               = 0
[pid 15974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15974] write(3, "1000", 4)         = 4
[pid 15974] close(3)                    = 0
[pid 15974] write(1, "executing program\n", 18executing program
) = 18
[pid 15974] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15974] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15974] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15974] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15974] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15974] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15975]}, 88) = 15975
[pid 15974] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15975 attached
 <unfinished ...>
[pid 15975] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15975] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15975] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15974] <... futex resumed>)        = 0
[pid 15974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15975] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15974] <... futex resumed>)        = 0
[pid 15974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15975] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15974] <... futex resumed>)        = 0
[pid 15974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15975] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15974] <... futex resumed>)        = 0
[pid 15974] exit_group(0)               = ?
[pid 15975] +++ exited with 0 +++
[pid 15974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15976 attached
 <unfinished ...>
[pid 15976] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15976] setpgid(0, 0)               = 0
[pid 15976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15976] write(3, "1000", 4)         = 4
executing program
[pid 15976] close(3)                    = 0
[pid 15976] write(1, "executing program\n", 18) = 18
[pid 15976] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15976] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15976] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15976] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15976] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15976] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15977]}, 88) = 15977
[pid 15976] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15977 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15976
[pid 15977] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15977] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15977] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15976] <... futex resumed>)        = 0
[pid 15976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15977] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15976] <... futex resumed>)        = 0
[pid 15976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15977] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15976] <... futex resumed>)        = 0
[pid 15976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15977] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15976] <... futex resumed>)        = 0
[pid 15976] exit_group(0)               = ?
[pid 15977] +++ exited with 0 +++
[pid 15976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15978 attached
 <unfinished ...>
[pid 15978] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15978] setpgid(0, 0)               = 0
[pid 15978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15978
[pid 15978] <... openat resumed>)       = 3
[pid 15978] write(3, "1000", 4)         = 4
[pid 15978] close(3)                    = 0
[pid 15978] write(1, "executing program\n", 18executing program
) = 18
[pid 15978] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15978] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15978] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15978] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15978] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15978] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15979 attached
 => {parent_tid=[15979]}, 88) = 15979
[pid 15979] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15979] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15979] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15978] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15979] <... futex resumed>)        = 0
[pid 15979] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15979] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15979] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15978] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15979] <... futex resumed>)        = 0
[pid 15978] <... futex resumed>)        = 1
[pid 15979] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15979] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15979] <... futex resumed>)        = 0
[pid 15978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15979] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15979] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15978] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15979] <... futex resumed>)        = 0
[pid 15978] <... futex resumed>)        = 1
[pid 15979] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15979] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15978] exit_group(0)               = ?
[pid 15979] <... futex resumed>)        = ?
[pid 15979] +++ exited with 0 +++
[pid 15978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15980
./strace-static-x86_64: Process 15980 attached
[pid 15980] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15980] setpgid(0, 0)               = 0
[pid 15980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15980] write(3, "1000", 4)         = 4
[pid 15980] close(3)                    = 0
[pid 15980] write(1, "executing program\n", 18executing program
) = 18
[pid 15980] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15980] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15980] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15980] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15981]}, 88) = 15981
[pid 15980] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15981 attached
 <unfinished ...>
[pid 15981] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15981] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15981] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15980] <... futex resumed>)        = 0
[pid 15980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15981] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15980] <... futex resumed>)        = 0
[pid 15980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15981] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15980] <... futex resumed>)        = 0
[pid 15980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15981] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15980] <... futex resumed>)        = 0
[pid 15980] exit_group(0)               = ?
[pid 15981] +++ exited with 0 +++
[pid 15980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15982 attached
 <unfinished ...>
[pid 15982] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15982] setpgid(0, 0)               = 0
[pid 15982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15982
[pid 15982] write(3, "1000", 4)         = 4
[pid 15982] close(3executing program
)                    = 0
[pid 15982] write(1, "executing program\n", 18) = 18
[pid 15982] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15982] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15982] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15982] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15982] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15982] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15983]}, 88) = 15983
[pid 15982] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15983 attached
 <unfinished ...>
[pid 15983] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15983] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15983] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15982] <... futex resumed>)        = 0
[pid 15982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15983] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15982] <... futex resumed>)        = 0
[pid 15982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15983] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15982] <... futex resumed>)        = 0
[pid 15982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15983] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15982] <... futex resumed>)        = 0
[pid 15982] exit_group(0)               = ?
[pid 15983] +++ exited with 0 +++
[pid 15982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15984 attached
, child_tidptr=0x55557060c690) = 15984
[pid 15984] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15984] setpgid(0, 0)               = 0
[pid 15984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15984] write(3, "1000", 4)         = 4
executing program
[pid 15984] close(3)                    = 0
[pid 15984] write(1, "executing program\n", 18) = 18
[pid 15984] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15984] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15984] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15984] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15984] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15984] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15985]}, 88) = 15985
[pid 15984] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15985 attached
 <unfinished ...>
[pid 15985] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15985] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15985] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15984] <... futex resumed>)        = 0
[pid 15984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15985] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15984] <... futex resumed>)        = 0
[pid 15984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15985] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15984] <... futex resumed>)        = 0
[pid 15984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15985] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15984] <... futex resumed>)        = 0
[pid 15984] exit_group(0)               = ?
[pid 15985] +++ exited with 0 +++
[pid 15984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15986 attached
, child_tidptr=0x55557060c690) = 15986
[pid 15986] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15986] setpgid(0, 0)               = 0
[pid 15986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15986] write(3, "1000", 4)         = 4
[pid 15986] close(3)                    = 0
[pid 15986] write(1, "executing program\n", 18executing program
) = 18
[pid 15986] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15986] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15986] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15986] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15986] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15986] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15987 attached
 => {parent_tid=[15987]}, 88) = 15987
[pid 15987] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15987] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15987] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15987] <... futex resumed>)        = 0
[pid 15987] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15987] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15987] <... futex resumed>)        = 0
[pid 15987] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15987] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15987] <... futex resumed>)        = 0
[pid 15987] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15987] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15987] <... futex resumed>)        = 0
[pid 15987] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15987] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15987] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15986] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15986] exit_group(0)               = ?
[pid 15987] <... futex resumed>)        = ?
[pid 15987] +++ exited with 0 +++
[pid 15986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15988
./strace-static-x86_64: Process 15988 attached
[pid 15988] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15988] setpgid(0, 0)               = 0
[pid 15988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15988] write(3, "1000", 4)         = 4
[pid 15988] close(3)                    = 0
[pid 15988] write(1, "executing program\n", 18executing program
) = 18
[pid 15988] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15988] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15988] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15988] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15988] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15988] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15989]}, 88) = 15989
[pid 15988] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15989 attached
 <unfinished ...>
[pid 15989] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15989] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15989] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15988] <... futex resumed>)        = 0
[pid 15989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15989] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15989] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15988] <... futex resumed>)        = 0
[pid 15988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15989] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15988] <... futex resumed>)        = 0
[pid 15988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15989] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15988] <... futex resumed>)        = 0
[pid 15988] exit_group(0)               = ?
[pid 15989] +++ exited with 0 +++
[pid 15988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15990
./strace-static-x86_64: Process 15990 attached
[pid 15990] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15990] setpgid(0, 0)               = 0
[pid 15990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15990] write(3, "1000", 4)         = 4
[pid 15990] close(3executing program
)                    = 0
[pid 15990] write(1, "executing program\n", 18) = 18
[pid 15990] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15990] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15990] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15990] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15991 attached
 => {parent_tid=[15991]}, 88) = 15991
[pid 15991] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15991] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15990] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15991] <... futex resumed>)        = 0
[pid 15991] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15991] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15990] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15991] <... futex resumed>)        = 0
[pid 15991] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15991] <... futex resumed>)        = 0
[pid 15991] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15991] <... futex resumed>)        = 0
[pid 15991] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15991] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15990] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15990] exit_group(0)               = ?
[pid 15991] <... futex resumed>)        = ?
[pid 15991] +++ exited with 0 +++
[pid 15990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15992
./strace-static-x86_64: Process 15992 attached
[pid 15992] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15992] setpgid(0, 0)               = 0
[pid 15992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15992] write(3, "1000", 4)         = 4
[pid 15992] close(3)                    = 0
[pid 15992] write(1, "executing program\n", 18executing program
) = 18
[pid 15992] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15992] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15992] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15992] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15992] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15992] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15993]}, 88) = 15993
[pid 15992] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15993 attached
 <unfinished ...>
[pid 15993] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15993] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15993] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15992] <... futex resumed>)        = 0
[pid 15992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15993] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15993] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15992] <... futex resumed>)        = 0
[pid 15992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15993] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15992] <... futex resumed>)        = 0
[pid 15992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15993] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15992] <... futex resumed>)        = 0
[pid 15992] exit_group(0)               = ?
[pid 15993] +++ exited with 0 +++
[pid 15992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 15994 attached
 <unfinished ...>
[pid 15994] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15994] setpgid(0, 0)               = 0
[pid 15994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 15994
[pid 15994] <... openat resumed>)       = 3
[pid 15994] write(3, "1000", 4)         = 4
[pid 15994] close(3)                    = 0
executing program
[pid 15994] write(1, "executing program\n", 18) = 18
[pid 15994] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15994] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15994] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15994] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15995 attached
 => {parent_tid=[15995]}, 88) = 15995
[pid 15995] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15995] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15994] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15995] <... futex resumed>)        = 0
[pid 15995] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 15994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15995] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15994] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15995] <... futex resumed>)        = 0
[pid 15995] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15995] <... futex resumed>)        = 0
[pid 15995] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15994] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15995] <... futex resumed>)        = 0
[pid 15995] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 15994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15995] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 15995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15994] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15994] exit_group(0)               = ?
[pid 15995] <... futex resumed>)        = ?
[pid 15995] +++ exited with 0 +++
[pid 15994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15996
./strace-static-x86_64: Process 15996 attached
[pid 15996] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15996] setpgid(0, 0)               = 0
[pid 15996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15996] write(3, "1000", 4)         = 4
[pid 15996] close(3)                    = 0
executing program
[pid 15996] write(1, "executing program\n", 18) = 18
[pid 15996] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15996] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15996] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15996] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15996] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15996] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15996] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 15997 attached
 <unfinished ...>
[pid 15997] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15997] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15996] <... clone3 resumed> => {parent_tid=[15997]}, 88) = 15997
[pid 15996] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15997] <... futex resumed>)        = 0
[pid 15997] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15997] <... futex resumed>)        = 0
[pid 15997] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 15996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15997] <... futex resumed>)        = 0
[pid 15996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15997] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15996] <... futex resumed>)        = 0
[pid 15996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15997] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 15996] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 15997] <... futex resumed>)        = 0
[pid 15997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 15996] exit_group(0)               = ?
[pid 15997] <... futex resumed>)        = ?
[pid 15997] +++ exited with 0 +++
[pid 15996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 15998
./strace-static-x86_64: Process 15998 attached
[pid 15998] set_robust_list(0x55557060c6a0, 24) = 0
[pid 15998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 15998] setpgid(0, 0)               = 0
[pid 15998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 15998] write(3, "1000", 4)         = 4
[pid 15998] close(3executing program
)                    = 0
[pid 15998] write(1, "executing program\n", 18) = 18
[pid 15998] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15998] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 15998] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 15998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 15998] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 15998] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 15998] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[15999]}, 88) = 15999
[pid 15998] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 15999 attached
 <unfinished ...>
[pid 15999] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 15999] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 15999] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 15999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15998] <... futex resumed>)        = 0
[pid 15998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15999] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 15999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15998] <... futex resumed>)        = 0
[pid 15998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15999] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 15999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15998] <... futex resumed>)        = 0
[pid 15998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 15998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 15999] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 15999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 15998] <... futex resumed>)        = 0
[pid 15998] exit_group(0)               = ?
[pid 15999] +++ exited with 0 +++
[pid 15998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16000
./strace-static-x86_64: Process 16000 attached
[pid 16000] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16000] setpgid(0, 0)               = 0
[pid 16000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16000] write(3, "1000", 4)         = 4
[pid 16000] close(3)                    = 0
[pid 16000] write(1, "executing program\n", 18executing program
) = 18
[pid 16000] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16000] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16000] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16000] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16000] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16000] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16001]}, 88) = 16001
[pid 16000] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16001 attached
 <unfinished ...>
[pid 16001] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16001] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16001] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16000] <... futex resumed>)        = 0
[pid 16000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16001] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16000] <... futex resumed>)        = 0
[pid 16000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16001] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16000] <... futex resumed>)        = 0
[pid 16000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16001] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16000] <... futex resumed>)        = 0
[pid 16000] exit_group(0)               = ?
[pid 16001] +++ exited with 0 +++
[pid 16000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16002 attached
 <unfinished ...>
[pid 16002] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16002] setpgid(0, 0)               = 0
[pid 16002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16002] write(3, "1000", 4)         = 4
[pid 16002] close(3executing program
)                    = 0
[pid 16002] write(1, "executing program\n", 18) = 18
[pid 16002] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16002] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16002] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16002] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16002] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16002
[pid 16002] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16002] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16003]}, 88) = 16003
[pid 16002] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16003 attached
 <unfinished ...>
[pid 16003] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16003] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16003] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16002] <... futex resumed>)        = 0
[pid 16002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16003] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16002] <... futex resumed>)        = 0
[pid 16002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16003] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16002] <... futex resumed>)        = 0
[pid 16002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16003] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16002] <... futex resumed>)        = 0
[pid 16002] exit_group(0)               = ?
[pid 16003] +++ exited with 0 +++
[pid 16002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16004 attached
, child_tidptr=0x55557060c690) = 16004
[pid 16004] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16004] setpgid(0, 0)               = 0
[pid 16004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16004] write(3, "1000", 4)         = 4
[pid 16004] close(3)                    = 0
[pid 16004] write(1, "executing program\n", 18executing program
) = 18
[pid 16004] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16004] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16004] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16004] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16004] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16004] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16005 attached
 => {parent_tid=[16005]}, 88) = 16005
[pid 16005] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16005] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16005] <... futex resumed>)        = 0
[pid 16005] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16005] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16005] <... futex resumed>)        = 0
[pid 16005] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16005] <... futex resumed>)        = 0
[pid 16005] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16005] <... futex resumed>)        = 0
[pid 16005] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16005] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16004] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16004] exit_group(0)               = ?
[pid 16005] <... futex resumed>)        = ?
[pid 16005] +++ exited with 0 +++
[pid 16004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16006
./strace-static-x86_64: Process 16006 attached
[pid 16006] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16006] setpgid(0, 0)               = 0
[pid 16006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16006] write(3, "1000", 4)         = 4
[pid 16006] close(3executing program
)                    = 0
[pid 16006] write(1, "executing program\n", 18) = 18
[pid 16006] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16006] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16006] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16006] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16006] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16006] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16007 attached
 => {parent_tid=[16007]}, 88) = 16007
[pid 16007] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16007] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16006] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16007] <... futex resumed>)        = 0
[pid 16006] <... futex resumed>)        = 1
[pid 16007] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16007] <... futex resumed>)        = 0
[pid 16006] <... futex resumed>)        = 1
[pid 16007] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16007] <... futex resumed>)        = 0
[pid 16006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16007] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16006] <... futex resumed>)        = 0
[pid 16006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16007] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16006] <... futex resumed>)        = 0
[pid 16007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16006] exit_group(0)               = ?
[pid 16007] <... futex resumed>)        = ?
[pid 16007] +++ exited with 0 +++
[pid 16006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16008
./strace-static-x86_64: Process 16008 attached
[pid 16008] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16008] setpgid(0, 0)               = 0
[pid 16008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16008] write(3, "1000", 4)         = 4
[pid 16008] close(3)                    = 0
[pid 16008] write(1, "executing program\n", 18executing program
) = 18
[pid 16008] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16008] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16008] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16008] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16008] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16008] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16008] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16009 attached
 <unfinished ...>
[pid 16009] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16009] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16008] <... clone3 resumed> => {parent_tid=[16009]}, 88) = 16009
[pid 16008] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16009] <... futex resumed>)        = 0
[pid 16009] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16008] <... futex resumed>)        = 0
[pid 16008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16009] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16008] <... futex resumed>)        = 0
[pid 16008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16009] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16008] <... futex resumed>)        = 0
[pid 16008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16009] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16008] <... futex resumed>)        = 0
[pid 16008] exit_group(0)               = ?
[pid 16009] +++ exited with 0 +++
[pid 16008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16010 attached
, child_tidptr=0x55557060c690) = 16010
[pid 16010] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16010] setpgid(0, 0)               = 0
[pid 16010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16010] write(3, "1000", 4)         = 4
[pid 16010] close(3executing program
)                    = 0
[pid 16010] write(1, "executing program\n", 18) = 18
[pid 16010] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16010] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16010] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16010] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16011]}, 88) = 16011
[pid 16010] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16011 attached
 <unfinished ...>
[pid 16011] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16011] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16011] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16010] <... futex resumed>)        = 0
[pid 16011] <... futex resumed>)        = 1
[pid 16010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16011] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16010] <... futex resumed>)        = 0
[pid 16010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16011] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16010] <... futex resumed>)        = 0
[pid 16011] <... futex resumed>)        = 1
[pid 16010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16011] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16010] <... futex resumed>)        = 0
[pid 16010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16011] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16010] <... futex resumed>)        = 0
[pid 16010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16011] <... futex resumed>)        = 1
[pid 16011] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16010] <... futex resumed>)        = 0
[pid 16010] exit_group(0)               = ?
[pid 16011] +++ exited with 0 +++
[pid 16010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16012 attached
, child_tidptr=0x55557060c690) = 16012
[pid 16012] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16012] setpgid(0, 0)               = 0
[pid 16012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16012] write(3, "1000", 4)         = 4
executing program
[pid 16012] close(3)                    = 0
[pid 16012] write(1, "executing program\n", 18) = 18
[pid 16012] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16012] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16012] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16012] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16012] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16012] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16013]}, 88) = 16013
[pid 16012] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16013 attached
 <unfinished ...>
[pid 16013] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16013] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16013] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16012] <... futex resumed>)        = 0
[pid 16012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16013] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16012] <... futex resumed>)        = 0
[pid 16012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16013] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16012] <... futex resumed>)        = 0
[pid 16012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16013] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16012] <... futex resumed>)        = 0
[pid 16012] exit_group(0)               = ?
[pid 16013] +++ exited with 0 +++
[pid 16012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16014 attached
 <unfinished ...>
[pid 16014] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16014] setpgid(0, 0)               = 0
[pid 16014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16014
[pid 16014] <... openat resumed>)       = 3
[pid 16014] write(3, "1000", 4)         = 4
[pid 16014] close(3)                    = 0
[pid 16014] write(1, "executing program\n", 18executing program
) = 18
[pid 16014] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16014] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16014] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16014] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16015 attached
 => {parent_tid=[16015]}, 88) = 16015
[pid 16015] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16014] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16015] <... futex resumed>)        = 0
[pid 16015] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16015] <... futex resumed>)        = 0
[pid 16015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16015] <... futex resumed>)        = 0
[pid 16014] <... futex resumed>)        = 1
[pid 16015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16015] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16014] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16015] <... futex resumed>)        = 0
[pid 16014] <... futex resumed>)        = 1
[pid 16015] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16014] exit_group(0)               = ?
[pid 16015] <... futex resumed>)        = ?
[pid 16015] +++ exited with 0 +++
[pid 16014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16016
./strace-static-x86_64: Process 16016 attached
[pid 16016] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16016] setpgid(0, 0)               = 0
[pid 16016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16016] write(3, "1000", 4)         = 4
[pid 16016] close(3)                    = 0
[pid 16016] write(1, "executing program\n", 18executing program
) = 18
[pid 16016] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16016] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16016] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16016] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16017]}, 88) = 16017
[pid 16016] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16017 attached
 <unfinished ...>
[pid 16017] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16017] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16016] <... futex resumed>)        = 0
[pid 16016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16016] <... futex resumed>)        = 0
[pid 16016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16016] <... futex resumed>)        = 0
[pid 16016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16017] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16016] <... futex resumed>)        = 0
[pid 16016] exit_group(0)               = ?
[pid 16017] +++ exited with 0 +++
[pid 16016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16018 attached
 <unfinished ...>
[pid 16018] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16018
[pid 16018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16018] setpgid(0, 0)               = 0
[pid 16018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16018] write(3, "1000", 4)         = 4
[pid 16018] close(3)                    = 0
[pid 16018] write(1, "executing program\n", 18executing program
) = 18
[pid 16018] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16018] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16018] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16019]}, 88) = 16019
[pid 16018] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16019 attached
 <unfinished ...>
[pid 16019] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16019] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16018] <... futex resumed>)        = 0
[pid 16018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16018] <... futex resumed>)        = 0
[pid 16018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16018] <... futex resumed>)        = 0
[pid 16018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16019] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16018] <... futex resumed>)        = 0
[pid 16018] exit_group(0)               = ?
[pid 16019] +++ exited with 0 +++
[pid 16018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16020 attached
 <unfinished ...>
[pid 16020] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16020] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16020
[pid 16020] <... setpgid resumed>)      = 0
[pid 16020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16020] write(3, "1000", 4)         = 4
[pid 16020] close(3executing program
)                    = 0
[pid 16020] write(1, "executing program\n", 18) = 18
[pid 16020] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16020] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16020] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16021]}, 88) = 16021
[pid 16020] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16021 attached
 <unfinished ...>
[pid 16021] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16020] <... futex resumed>)        = 0
[pid 16020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16020] <... futex resumed>)        = 0
[pid 16020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16020] <... futex resumed>)        = 0
[pid 16020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16021] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16020] <... futex resumed>)        = 0
[pid 16020] exit_group(0)               = ?
[pid 16021] +++ exited with 0 +++
[pid 16020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16022 attached
, child_tidptr=0x55557060c690) = 16022
[pid 16022] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16022] setpgid(0, 0)               = 0
[pid 16022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16022] write(3, "1000", 4)         = 4
[pid 16022] close(3)                    = 0
[pid 16022] write(1, "executing program\n", 18executing program
) = 18
[pid 16022] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16022] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16022] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16022] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16023 attached
 => {parent_tid=[16023]}, 88) = 16023
[pid 16023] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16023] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16022] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16023] <... futex resumed>)        = 0
[pid 16023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16023] <... futex resumed>)        = 0
[pid 16023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16023] <... futex resumed>)        = 0
[pid 16023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16023] <... futex resumed>)        = 0
[pid 16023] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16023] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16022] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16022] exit_group(0)               = ?
[pid 16023] <... futex resumed>)        = ?
[pid 16023] +++ exited with 0 +++
[pid 16022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16024
./strace-static-x86_64: Process 16024 attached
[pid 16024] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16024] setpgid(0, 0)               = 0
[pid 16024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16024] write(3, "1000", 4)         = 4
[pid 16024] close(3executing program
)                    = 0
[pid 16024] write(1, "executing program\n", 18) = 18
[pid 16024] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16024] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16024] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16024] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16024] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16024] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16024] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16025 attached
 <unfinished ...>
[pid 16025] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16025] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16024] <... clone3 resumed> => {parent_tid=[16025]}, 88) = 16025
[pid 16024] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16025] <... futex resumed>)        = 0
[pid 16025] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16025] <... futex resumed>)        = 0
[pid 16024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16025] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16024] <... futex resumed>)        = 0
[pid 16025] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16025] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16024] <... futex resumed>)        = 0
[pid 16025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16024] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16025] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16024] <... futex resumed>)        = 0
[pid 16024] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16025] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16025] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16024] <... futex resumed>)        = 0
[pid 16025] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16024] exit_group(0)               = ?
[pid 16025] <... futex resumed>)        = ?
[pid 16025] +++ exited with 0 +++
[pid 16024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16026
./strace-static-x86_64: Process 16026 attached
[pid 16026] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16026] setpgid(0, 0)               = 0
[pid 16026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16026] write(3, "1000", 4)         = 4
executing program
[pid 16026] close(3)                    = 0
[pid 16026] write(1, "executing program\n", 18) = 18
[pid 16026] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16026] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16026] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16026] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16026] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16026] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16026] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16027]}, 88) = 16027
[pid 16026] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16027 attached
 <unfinished ...>
[pid 16027] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16027] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16027] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16026] <... futex resumed>)        = 0
[pid 16026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16027] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16026] <... futex resumed>)        = 0
[pid 16026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16027] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16026] <... futex resumed>)        = 0
[pid 16026] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16026] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16027] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16027] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16026] <... futex resumed>)        = 0
[pid 16026] exit_group(0)               = ?
[pid 16027] +++ exited with 0 +++
[pid 16026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16028 attached
 <unfinished ...>
[pid 16028] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16028] setpgid(0, 0)               = 0
[pid 16028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16028] write(3, "1000", 4)         = 4
[pid 16028] close(3)                    = 0
[pid 16028] write(1, "executing program\n", 18executing program
) = 18
[pid 16028] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16028] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16028] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16028] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16028] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16028] rt_sigprocmask(SIG_BLOCK, ~[],  <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16028
[pid 16028] <... rt_sigprocmask resumed>[], 8) = 0
[pid 16028] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16029]}, 88) = 16029
[pid 16028] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16029 attached
 <unfinished ...>
[pid 16029] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16029] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16029] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16028] <... futex resumed>)        = 0
[pid 16028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16029] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16028] <... futex resumed>)        = 0
[pid 16028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16029] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16028] <... futex resumed>)        = 0
[pid 16028] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16028] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16029] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16029] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16028] <... futex resumed>)        = 0
[pid 16028] exit_group(0)               = ?
[pid 16029] +++ exited with 0 +++
[pid 16028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16030
./strace-static-x86_64: Process 16030 attached
[pid 16030] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16030] setpgid(0, 0)               = 0
[pid 16030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16030] write(3, "1000", 4)         = 4
[pid 16030] close(3)                    = 0
[pid 16030] write(1, "executing program\n", 18executing program
) = 18
[pid 16030] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16030] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16030] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16030] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16031 attached
 => {parent_tid=[16031]}, 88) = 16031
[pid 16031] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16031] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16030] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16031] <... futex resumed>)        = 0
[pid 16031] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16031] <... futex resumed>)        = 0
[pid 16031] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16030] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16031] <... futex resumed>)        = 0
[pid 16031] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16030] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16031] <... futex resumed>)        = 0
[pid 16030] <... futex resumed>)        = 1
[pid 16031] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16030] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16031] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16031] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16031] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16030] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16030] exit_group(0)               = ?
[pid 16031] <... futex resumed>)        = ?
[pid 16031] +++ exited with 0 +++
[pid 16030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16032
./strace-static-x86_64: Process 16032 attached
[pid 16032] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16032] setpgid(0, 0)               = 0
[pid 16032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16032] write(3, "1000", 4)         = 4
[pid 16032] close(3)                    = 0
[pid 16032] write(1, "executing program\n", 18executing program
) = 18
[pid 16032] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16032] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16032] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16032] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16032] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16032] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16032] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16033]}, 88) = 16033
[pid 16032] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16033 attached
 <unfinished ...>
[pid 16033] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16033] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16033] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16032] <... futex resumed>)        = 0
[pid 16032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16033] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16032] <... futex resumed>)        = 0
[pid 16032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16033] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16032] <... futex resumed>)        = 0
[pid 16032] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16032] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16033] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16033] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16032] <... futex resumed>)        = 0
[pid 16032] exit_group(0)               = ?
[pid 16033] +++ exited with 0 +++
[pid 16032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16034 attached
 <unfinished ...>
[pid 16034] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16034] setpgid(0, 0)               = 0
[pid 16034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16034
[pid 16034] <... openat resumed>)       = 3
[pid 16034] write(3, "1000", 4)         = 4
[pid 16034] close(3)                    = 0
executing program
[pid 16034] write(1, "executing program\n", 18) = 18
[pid 16034] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16034] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16034] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16034] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16034] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16034] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16034] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16035]}, 88) = 16035
./strace-static-x86_64: Process 16035 attached
[pid 16034] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16035] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16035] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16035] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16034] <... futex resumed>)        = 0
[pid 16034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16035] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16034] <... futex resumed>)        = 0
[pid 16034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16035] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16034] <... futex resumed>)        = 0
[pid 16034] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16034] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16035] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16035] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16034] <... futex resumed>)        = 0
[pid 16034] exit_group(0)               = ?
[pid 16035] +++ exited with 0 +++
[pid 16034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16036 attached
 <unfinished ...>
[pid 16036] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16036] setpgid(0, 0)               = 0
[pid 16036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16036] write(3, "1000", 4)         = 4
[pid 16036] close(3)                    = 0
executing program
[pid 16036] write(1, "executing program\n", 18) = 18
[pid 16036] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16036] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16036] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16036] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16036] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16036] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16036] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16037]}, 88) = 16037
[pid 16036] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16037 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16036
[pid 16037] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16037] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16037] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16036] <... futex resumed>)        = 0
[pid 16036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16037] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16036] <... futex resumed>)        = 0
[pid 16036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16037] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16036] <... futex resumed>)        = 0
[pid 16036] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16036] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16037] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16037] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16036] <... futex resumed>)        = 0
[pid 16036] exit_group(0)               = ?
[pid 16037] +++ exited with 0 +++
[pid 16036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16038
./strace-static-x86_64: Process 16038 attached
[pid 16038] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16038] setpgid(0, 0)               = 0
[pid 16038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16038] write(3, "1000", 4)         = 4
[pid 16038] close(3)                    = 0
[pid 16038] write(1, "executing program\n", 18executing program
) = 18
[pid 16038] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16038] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16038] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16038] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16038] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16038] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16038] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16039 attached
 => {parent_tid=[16039]}, 88) = 16039
[pid 16039] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16039] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16039] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16038] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16039] <... futex resumed>)        = 0
[pid 16039] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16039] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16039] <... futex resumed>)        = 0
[pid 16039] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16039] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16039] <... futex resumed>)        = 0
[pid 16039] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16039] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16038] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16039] <... futex resumed>)        = 0
[pid 16039] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16038] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16039] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16039] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16038] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16038] exit_group(0)               = ?
[pid 16039] <... futex resumed>)        = ?
[pid 16039] +++ exited with 0 +++
[pid 16038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16040
./strace-static-x86_64: Process 16040 attached
[pid 16040] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16040] setpgid(0, 0)               = 0
[pid 16040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16040] write(3, "1000", 4)         = 4
[pid 16040] close(3)                    = 0
executing program
[pid 16040] write(1, "executing program\n", 18) = 18
[pid 16040] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16040] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16040] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16040] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16040] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16040] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16040] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16041]}, 88) = 16041
[pid 16040] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16041 attached
 <unfinished ...>
[pid 16041] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16041] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16041] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16040] <... futex resumed>)        = 0
[pid 16040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16041] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16040] <... futex resumed>)        = 0
[pid 16040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16041] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16040] <... futex resumed>)        = 0
[pid 16040] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16040] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16041] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16041] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16040] <... futex resumed>)        = 0
[pid 16040] exit_group(0)               = ?
[pid 16041] +++ exited with 0 +++
[pid 16040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16042
./strace-static-x86_64: Process 16042 attached
[pid 16042] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16042] setpgid(0, 0)               = 0
[pid 16042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16042] write(3, "1000", 4)         = 4
[pid 16042] close(3)                    = 0
executing program
[pid 16042] write(1, "executing program\n", 18) = 18
[pid 16042] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16042] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16042] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16042] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16042] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16042] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16042] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16043 attached
 => {parent_tid=[16043]}, 88) = 16043
[pid 16043] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16043] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16042] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16043] <... futex resumed>)        = 0
[pid 16043] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16043] <... futex resumed>)        = 0
[pid 16043] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16043] <... futex resumed>)        = 0
[pid 16042] <... futex resumed>)        = 1
[pid 16043] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16042] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16043] <... futex resumed>)        = 0
[pid 16043] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16042] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16043] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16043] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16043] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16042] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16042] exit_group(0)               = ?
[pid 16043] <... futex resumed>)        = ?
[pid 16043] +++ exited with 0 +++
[pid 16042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16044 attached
, child_tidptr=0x55557060c690) = 16044
[pid 16044] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16044] setpgid(0, 0)               = 0
[pid 16044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16044] write(3, "1000", 4)         = 4
[pid 16044] close(3)                    = 0
executing program
[pid 16044] write(1, "executing program\n", 18) = 18
[pid 16044] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16044] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16044] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16044] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16044] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16044] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16044] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16045 attached
 <unfinished ...>
[pid 16045] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16045] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16044] <... clone3 resumed> => {parent_tid=[16045]}, 88) = 16045
[pid 16044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16045] <... futex resumed>)        = 0
[pid 16044] <... futex resumed>)        = 1
[pid 16045] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16045] <... futex resumed>)        = 0
[pid 16044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16045] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16044] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16045] <... futex resumed>)        = 0
[pid 16045] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16044] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16045] <... futex resumed>)        = 0
[pid 16044] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16045] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16045] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16044] <... futex resumed>)        = 0
[pid 16045] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16044] exit_group(0)               = ?
[pid 16045] <... futex resumed>)        = ?
[pid 16045] +++ exited with 0 +++
[pid 16044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16046
./strace-static-x86_64: Process 16046 attached
[pid 16046] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16046] setpgid(0, 0)               = 0
[pid 16046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16046] write(3, "1000", 4)         = 4
[pid 16046] close(3)                    = 0
executing program
[pid 16046] write(1, "executing program\n", 18) = 18
[pid 16046] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16046] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16046] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16046] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16046] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16046] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16046] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16047 attached
 <unfinished ...>
[pid 16047] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16047] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16046] <... clone3 resumed> => {parent_tid=[16047]}, 88) = 16047
[pid 16046] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16047] <... futex resumed>)        = 0
[pid 16046] <... futex resumed>)        = 1
[pid 16047] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16047] <... futex resumed>)        = 0
[pid 16046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16047] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16047] <... futex resumed>)        = 0
[pid 16046] <... futex resumed>)        = 1
[pid 16047] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16046] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16047] <... futex resumed>)        = 0
[pid 16046] <... futex resumed>)        = 1
[pid 16047] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16046] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16047] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16046] <... futex resumed>)        = 0
[pid 16047] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16046] exit_group(0)               = ?
[pid 16047] <... futex resumed>)        = ?
[pid 16047] +++ exited with 0 +++
[pid 16046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16048
./strace-static-x86_64: Process 16048 attached
[pid 16048] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16048] setpgid(0, 0)               = 0
[pid 16048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16048] write(3, "1000", 4)         = 4
[pid 16048] close(3executing program
)                    = 0
[pid 16048] write(1, "executing program\n", 18) = 18
[pid 16048] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16048] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16048] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16048] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16048] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16048] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16048] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16049 attached
 <unfinished ...>
[pid 16049] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16049] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16048] <... clone3 resumed> => {parent_tid=[16049]}, 88) = 16049
[pid 16048] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16049] <... futex resumed>)        = 0
[pid 16048] <... futex resumed>)        = 1
[pid 16049] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16049] <... futex resumed>)        = 0
[pid 16048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16049] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16048] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16049] <... futex resumed>)        = 0
[pid 16049] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16048] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16049] <... futex resumed>)        = 0
[pid 16048] <... futex resumed>)        = 1
[pid 16048] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16049] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16049] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16048] <... futex resumed>)        = 0
[pid 16049] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16048] exit_group(0)               = ?
[pid 16049] <... futex resumed>)        = ?
[pid 16049] +++ exited with 0 +++
[pid 16048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16050
./strace-static-x86_64: Process 16050 attached
[pid 16050] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16050] setpgid(0, 0)               = 0
[pid 16050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16050] write(3, "1000", 4)         = 4
[pid 16050] close(3executing program
)                    = 0
[pid 16050] write(1, "executing program\n", 18) = 18
[pid 16050] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16050] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16050] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16050] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16051 attached
 <unfinished ...>
[pid 16051] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16051] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16050] <... clone3 resumed> => {parent_tid=[16051]}, 88) = 16051
[pid 16050] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16051] <... futex resumed>)        = 0
[pid 16051] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16051] <... futex resumed>)        = 0
[pid 16050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16051] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16050] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16051] <... futex resumed>)        = 0
[pid 16051] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16050] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16051] <... futex resumed>)        = 0
[pid 16050] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16051] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16051] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16050] <... futex resumed>)        = 0
[pid 16051] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16050] exit_group(0)               = ?
[pid 16051] <... futex resumed>)        = ?
[pid 16051] +++ exited with 0 +++
[pid 16050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16052 attached
, child_tidptr=0x55557060c690) = 16052
[pid 16052] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16052] setpgid(0, 0)               = 0
[pid 16052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16052] write(3, "1000", 4)         = 4
[pid 16052] close(3executing program
)                    = 0
[pid 16052] write(1, "executing program\n", 18) = 18
[pid 16052] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16052] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16052] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16052] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16052] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16052] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16052] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16053 attached
 <unfinished ...>
[pid 16053] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16053] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16052] <... clone3 resumed> => {parent_tid=[16053]}, 88) = 16053
[pid 16052] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16053] <... futex resumed>)        = 0
[pid 16052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16053] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16053] <... futex resumed>)        = 0
[pid 16052] <... futex resumed>)        = 1
[pid 16053] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16053] <... futex resumed>)        = 0
[pid 16052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16053] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16052] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16052] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16053] <... futex resumed>)        = 0
[pid 16052] <... futex resumed>)        = 1
[pid 16052] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16053] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16053] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16052] <... futex resumed>)        = 0
[pid 16053] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16052] exit_group(0)               = ?
[pid 16053] <... futex resumed>)        = ?
[pid 16053] +++ exited with 0 +++
[pid 16052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16054
./strace-static-x86_64: Process 16054 attached
[pid 16054] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16054] setpgid(0, 0)               = 0
[pid 16054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16054] write(3, "1000", 4)         = 4
[pid 16054] close(3)                    = 0
[pid 16054] write(1, "executing program\n", 18executing program
) = 18
[pid 16054] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16054] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16054] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16054] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16054] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16054] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16054] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16055 attached
 <unfinished ...>
[pid 16055] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16055] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16054] <... clone3 resumed> => {parent_tid=[16055]}, 88) = 16055
[pid 16054] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16055] <... futex resumed>)        = 0
[pid 16054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16055] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16055] <... futex resumed>)        = 0
[pid 16055] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16055] <... futex resumed>)        = 0
[pid 16054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16055] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16054] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16054] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16055] <... futex resumed>)        = 0
[pid 16055] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16054] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16055] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16055] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16054] <... futex resumed>)        = 0
[pid 16055] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16054] exit_group(0)               = ?
[pid 16055] <... futex resumed>)        = ?
[pid 16055] +++ exited with 0 +++
[pid 16054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16056
./strace-static-x86_64: Process 16056 attached
[pid 16056] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16056] setpgid(0, 0)               = 0
[pid 16056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16056] write(3, "1000", 4)         = 4
[pid 16056] close(3)                    = 0
executing program
[pid 16056] write(1, "executing program\n", 18) = 18
[pid 16056] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16056] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16056] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16056] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16056] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16056] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16056] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16057]}, 88) = 16057
./strace-static-x86_64: Process 16057 attached
[pid 16056] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16057] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16057] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16057] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16056] <... futex resumed>)        = 0
[pid 16056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16057] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16056] <... futex resumed>)        = 0
[pid 16056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16057] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16056] <... futex resumed>)        = 0
[pid 16056] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16056] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16057] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16057] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16056] <... futex resumed>)        = 0
[pid 16056] exit_group(0)               = ?
[pid 16057] +++ exited with 0 +++
[pid 16056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16058 attached
 <unfinished ...>
[pid 16058] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16058
[pid 16058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16058] setpgid(0, 0)               = 0
[pid 16058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 16058] write(3, "1000", 4)         = 4
[pid 16058] close(3)                    = 0
[pid 16058] write(1, "executing program\n", 18) = 18
[pid 16058] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16058] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16058] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16058] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16058] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16058] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16058] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16059 attached
 => {parent_tid=[16059]}, 88) = 16059
[pid 16059] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16059] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16058] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16059] <... futex resumed>)        = 0
[pid 16059] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16059] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16059] <... futex resumed>)        = 0
[pid 16059] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16059] <... futex resumed>)        = 0
[pid 16059] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16058] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16059] <... futex resumed>)        = 0
[pid 16059] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16058] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16059] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16059] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16059] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16058] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16058] exit_group(0)               = ?
[pid 16059] <... futex resumed>)        = ?
[pid 16059] +++ exited with 0 +++
[pid 16058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16060
./strace-static-x86_64: Process 16060 attached
[pid 16060] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16060] setpgid(0, 0)               = 0
[pid 16060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16060] write(3, "1000", 4)         = 4
[pid 16060] close(3executing program
)                    = 0
[pid 16060] write(1, "executing program\n", 18) = 18
[pid 16060] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16060] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16060] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16060] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16060] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16060] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16060] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16061]}, 88) = 16061
./strace-static-x86_64: Process 16061 attached
[pid 16060] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16061] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16061] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16061] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16061] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16060] <... futex resumed>)        = 0
[pid 16060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16061] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16061] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16060] <... futex resumed>)        = 0
[pid 16060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16061] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16060] <... futex resumed>)        = 0
[pid 16061] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16060] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16060] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16061] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16061] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16060] <... futex resumed>)        = 0
[pid 16060] exit_group(0)               = ?
[pid 16061] +++ exited with 0 +++
[pid 16060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16062 attached
 <unfinished ...>
[pid 16062] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16062
[pid 16062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16062] setpgid(0, 0)               = 0
[pid 16062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16062] write(3, "1000", 4)         = 4
[pid 16062] close(3)                    = 0
[pid 16062] write(1, "executing program\n", 18executing program
) = 18
[pid 16062] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16062] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16062] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16062] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16062] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16062] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16062] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16063]}, 88) = 16063
[pid 16062] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16063 attached
 <unfinished ...>
[pid 16063] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16063] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16063] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16062] <... futex resumed>)        = 0
[pid 16062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16063] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16062] <... futex resumed>)        = 0
[pid 16062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16063] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16062] <... futex resumed>)        = 0
[pid 16062] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16062] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16063] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16063] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16062] <... futex resumed>)        = 0
[pid 16062] exit_group(0)               = ?
[pid 16063] +++ exited with 0 +++
[pid 16062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16064 attached
 <unfinished ...>
[pid 16064] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16064] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16064
[pid 16064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16064] write(3, "1000", 4)         = 4
[pid 16064] close(3)                    = 0
[pid 16064] write(1, "executing program\n", 18executing program
) = 18
[pid 16064] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16064] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16064] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16064] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16064] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16064] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16064] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16065 attached
 => {parent_tid=[16065]}, 88) = 16065
[pid 16065] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16065] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16065] <... futex resumed>)        = 0
[pid 16065] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16065] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16065] <... futex resumed>)        = 0
[pid 16064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16065] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16065] <... futex resumed>)        = 0
[pid 16064] <... futex resumed>)        = 1
[pid 16065] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16064] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16065] <... futex resumed>)        = 0
[pid 16065] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16064] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16065] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16065] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16065] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16064] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16064] exit_group(0)               = ?
[pid 16065] <... futex resumed>)        = ?
[pid 16065] +++ exited with 0 +++
[pid 16064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16066 attached
 <unfinished ...>
[pid 16066] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16066
[pid 16066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16066] setpgid(0, 0)               = 0
[pid 16066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16066] write(3, "1000", 4)         = 4
[pid 16066] close(3)                    = 0
[pid 16066] write(1, "executing program\n", 18executing program
) = 18
[pid 16066] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16066] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16066] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16066] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16066] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16066] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16066] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16067]}, 88) = 16067
[pid 16066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16067 attached
 <unfinished ...>
[pid 16067] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16067] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16067] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16066] <... futex resumed>)        = 0
[pid 16067] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16067] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16067] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16066] <... futex resumed>)        = 0
[pid 16066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16067] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16066] <... futex resumed>)        = 0
[pid 16066] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16066] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16067] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16067] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16066] <... futex resumed>)        = 0
[pid 16066] exit_group(0)               = ?
[pid 16067] +++ exited with 0 +++
[pid 16066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16068
./strace-static-x86_64: Process 16068 attached
[pid 16068] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16068] setpgid(0, 0)               = 0
[pid 16068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16068] write(3, "1000", 4)         = 4
[pid 16068] close(3)                    = 0
[pid 16068] write(1, "executing program\n", 18executing program
) = 18
[pid 16068] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16068] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16068] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16068] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16068] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16068] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16068] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16069]}, 88) = 16069
[pid 16068] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16069 attached
executing program
executing program
 <unfinished ...>
[pid 16069] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16069] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16068] <... futex resumed>)        = 0
[pid 16068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16069] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16068] <... futex resumed>)        = 0
[pid 16068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16069] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16068] <... futex resumed>)        = 0
[pid 16068] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16068] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16069] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16069] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16068] <... futex resumed>)        = 0
[pid 16068] exit_group(0)               = ?
[pid 16069] +++ exited with 0 +++
[pid 16068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16070 attached
 <unfinished ...>
[pid 16070] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16070] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16070
[pid 16070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16070] write(3, "1000", 4)         = 4
[pid 16070] close(3)                    = 0
[pid 16070] write(1, "executing program\n", 18) = 18
[pid 16070] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16070] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16070] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16070] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16071 attached
 => {parent_tid=[16071]}, 88) = 16071
[pid 16071] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16071] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16070] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16071] <... futex resumed>)        = 0
[pid 16071] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16071] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16070] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16071] <... futex resumed>)        = 0
[pid 16070] <... futex resumed>)        = 1
[pid 16071] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16071] <... futex resumed>)        = 0
[pid 16070] <... futex resumed>)        = 1
[pid 16071] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16070] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16071] <... futex resumed>)        = 0
[pid 16070] <... futex resumed>)        = 1
[pid 16071] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16070] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16071] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16071] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16071] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16070] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16070] exit_group(0)               = ?
[pid 16071] <... futex resumed>)        = ?
[pid 16071] +++ exited with 0 +++
[pid 16070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16072 attached
, child_tidptr=0x55557060c690) = 16072
[pid 16072] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16072] setpgid(0, 0)               = 0
[pid 16072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16072] write(3, "1000", 4)         = 4
[pid 16072] close(3)                    = 0
[pid 16072] write(1, "executing program\n", 18) = 18
[pid 16072] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16072] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16072] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16072] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16072] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16072] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16072] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16073 attached
 => {parent_tid=[16073]}, 88) = 16073
[pid 16072] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16073] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16073] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16073] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16072] <... futex resumed>)        = 0
[pid 16072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16073] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16072] <... futex resumed>)        = 0
[pid 16072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16073] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16072] <... futex resumed>)        = 0
[pid 16072] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16072] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16073] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16073] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16072] <... futex resumed>)        = 0
[pid 16072] exit_group(0)               = ?
[pid 16073] +++ exited with 0 +++
[pid 16072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16074 attached
 <unfinished ...>
[pid 16074] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16074] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16074
[pid 16074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16074] write(3, "1000", 4)         = 4
[pid 16074] close(3)                    = 0
[pid 16074] write(1, "executing program\n", 18) = 18
[pid 16074] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16074] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16074] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16074] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16074] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16074] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16074] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16075 attached
 => {parent_tid=[16075]}, 88) = 16075
[pid 16075] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16075] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16074] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16075] <... futex resumed>)        = 0
[pid 16075] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16075] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16075] <... futex resumed>)        = 0
[pid 16075] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16075] <... futex resumed>)        = 0
[pid 16075] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16074] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16075] <... futex resumed>)        = 0
[pid 16075] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16074] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16075] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16075] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16075] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16074] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16074] exit_group(0)               = ?
[pid 16075] <... futex resumed>)        = ?
[pid 16075] +++ exited with 0 +++
[pid 16074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16076
./strace-static-x86_64: Process 16076 attached
[pid 16076] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16076] setpgid(0, 0)               = 0
[pid 16076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16076] write(3, "1000", 4)         = 4
[pid 16076] close(3)                    = 0
[pid 16076] write(1, "executing program\n", 18) = 18
[pid 16076] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16076] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16076] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16076] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16076] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16076] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16076] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16077 attached
 <unfinished ...>
[pid 16077] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16077] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16076] <... clone3 resumed> => {parent_tid=[16077]}, 88) = 16077
[pid 16076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16077] <... futex resumed>)        = 0
[pid 16077] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16077] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16077] <... futex resumed>)        = 0
[pid 16077] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16077] <... futex resumed>)        = 0
[pid 16077] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16076] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16076] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16077] <... futex resumed>)        = 0
[pid 16076] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16077] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16077] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16077] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16076] <... futex resumed>)        = 0
[pid 16076] exit_group(0)               = ?
[pid 16077] <... futex resumed>)        = ?
[pid 16077] +++ exited with 0 +++
[pid 16076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16078 attached
, child_tidptr=0x55557060c690) = 16078
[pid 16078] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16078] setpgid(0, 0)               = 0
[pid 16078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16078] write(3, "1000", 4)         = 4
[pid 16078] close(3)                    = 0
[pid 16078] write(1, "executing program\n", 18) = 18
[pid 16078] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16078] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16078] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16078] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16079 attached
 <unfinished ...>
[pid 16079] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16078] <... clone3 resumed> => {parent_tid=[16079]}, 88) = 16079
[pid 16078] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16079] <... futex resumed>)        = 0
[pid 16078] <... futex resumed>)        = 1
[pid 16079] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16079] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16079] <... futex resumed>)        = 0
[pid 16078] <... futex resumed>)        = 1
[pid 16079] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16078] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16079] <... futex resumed>)        = 0
[pid 16078] <... futex resumed>)        = 1
[pid 16079] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16078] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16079] <... futex resumed>)        = 0
[pid 16078] <... futex resumed>)        = 1
[pid 16078] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16079] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16079] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16078] <... futex resumed>)        = 0
executing program
[pid 16079] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16078] exit_group(0)               = ?
[pid 16079] <... futex resumed>)        = ?
[pid 16079] +++ exited with 0 +++
[pid 16078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16080 attached
, child_tidptr=0x55557060c690) = 16080
[pid 16080] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16080] setpgid(0, 0)               = 0
[pid 16080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16080] write(3, "1000", 4)         = 4
[pid 16080] close(3)                    = 0
[pid 16080] write(1, "executing program\n", 18) = 18
[pid 16080] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16080] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16080] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16080] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16080] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16080] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16081 attached
 => {parent_tid=[16081]}, 88) = 16081
[pid 16081] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16081] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16080] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 1
[pid 16081] <... futex resumed>)        = 0
[pid 16080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16081] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16080] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16081] <... futex resumed>)        = 0
[pid 16080] <... futex resumed>)        = 1
[pid 16081] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16081] <... futex resumed>)        = 0
[pid 16081] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16080] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16081] <... futex resumed>)        = 0
[pid 16080] <... futex resumed>)        = 1
[pid 16080] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16081] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16081] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16080] <... futex resumed>)        = 0
[pid 16081] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16080] exit_group(0)               = ?
[pid 16081] <... futex resumed>)        = ?
[pid 16081] +++ exited with 0 +++
[pid 16080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16082
./strace-static-x86_64: Process 16082 attached
[pid 16082] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16082] setpgid(0, 0)               = 0
[pid 16082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16082] write(3, "1000", 4)         = 4
[pid 16082] close(3)                    = 0
[pid 16082] write(1, "executing program\n", 18) = 18
[pid 16082] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16082] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16082] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16082] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16082] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16082] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16083 attached
 <unfinished ...>
[pid 16083] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16083] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16082] <... clone3 resumed> => {parent_tid=[16083]}, 88) = 16083
[pid 16082] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16083] <... futex resumed>)        = 0
[pid 16083] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16083] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16083] <... futex resumed>)        = 0
[pid 16083] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16082] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16083] <... futex resumed>)        = 0
[pid 16083] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16082] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16083] <... futex resumed>)        = 0
[pid 16082] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16083] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16083] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16082] <... futex resumed>)        = 0
[pid 16083] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16082] exit_group(0)               = ?
[pid 16083] <... futex resumed>)        = ?
[pid 16083] +++ exited with 0 +++
[pid 16082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16084
./strace-static-x86_64: Process 16084 attached
[pid 16084] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16084] setpgid(0, 0)               = 0
[pid 16084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16084] write(3, "1000", 4)         = 4
[pid 16084] close(3)                    = 0
executing program
[pid 16084] write(1, "executing program\n", 18) = 18
[pid 16084] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16084] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16084] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16084] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16084] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16084] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16085]}, 88) = 16085
./strace-static-x86_64: Process 16085 attached
[pid 16084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16085] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16085] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16084] <... futex resumed>)        = 0
[pid 16084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16085] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16084] <... futex resumed>)        = 0
[pid 16084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16085] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16084] <... futex resumed>)        = 0
[pid 16084] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16084] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16085] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16085] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16084] <... futex resumed>)        = 0
[pid 16084] exit_group(0 <unfinished ...>
[pid 16085] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16084] <... exit_group resumed>)   = ?
[pid 16085] <... futex resumed>)        = ?
[pid 16085] +++ exited with 0 +++
[pid 16084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16086 attached
 <unfinished ...>
[pid 16086] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16086
[pid 16086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16086] setpgid(0, 0)               = 0
[pid 16086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16086] write(3, "1000", 4)         = 4
[pid 16086] close(3)                    = 0
[pid 16086] write(1, "executing program\n", 18) = 18
[pid 16086] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16086] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16086] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16086] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16086] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16086] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16086] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16087]}, 88) = 16087
[pid 16086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16087 attached
 <unfinished ...>
[pid 16087] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16087] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16087] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16086] <... futex resumed>)        = 0
[pid 16086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16087] <... futex resumed>)        = 1
[pid 16087] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16086] <... futex resumed>)        = 0
[pid 16086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16087] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16086] <... futex resumed>)        = 0
[pid 16086] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16086] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16087] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16087] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16086] <... futex resumed>)        = 0
[pid 16086] exit_group(0)               = ?
[pid 16087] +++ exited with 0 +++
[pid 16086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16088 attached
 <unfinished ...>
[pid 16088] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16088
[pid 16088] setpgid(0, 0)               = 0
[pid 16088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16088] write(3, "1000", 4)         = 4
[pid 16088] close(3)                    = 0
[pid 16088] write(1, "executing program\n", 18) = 18
[pid 16088] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16088] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16088] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16088] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16088] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16088] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16088] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16089 attached
 => {parent_tid=[16089]}, 88) = 16089
[pid 16089] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16089] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16088] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16089] <... futex resumed>)        = 0
[pid 16089] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16089] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16088] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16089] <... futex resumed>)        = 0
[pid 16088] <... futex resumed>)        = 1
[pid 16089] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16089] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16088] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16089] <... futex resumed>)        = 0
[pid 16089] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16088] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16088] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16089] <... futex resumed>)        = 0
[pid 16089] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16088] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16089] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16089] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16089] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16088] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16088] exit_group(0)               = ?
[pid 16089] <... futex resumed>)        = ?
[pid 16089] +++ exited with 0 +++
[pid 16088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16090
./strace-static-x86_64: Process 16090 attached
[pid 16090] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16090] setpgid(0, 0)               = 0
[pid 16090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16090] write(3, "1000", 4)         = 4
[pid 16090] close(3)                    = 0
[pid 16090] write(1, "executing program\n", 18) = 18
[pid 16090] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16090] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16090] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16090] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16091 attached
 <unfinished ...>
[pid 16091] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16091] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16090] <... clone3 resumed> => {parent_tid=[16091]}, 88) = 16091
[pid 16090] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16091] <... futex resumed>)        = 0
[pid 16090] <... futex resumed>)        = 1
[pid 16091] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16091] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16090] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
executing program
executing program
[pid 16090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16091] <... futex resumed>)        = 0
[pid 16091] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16091] <... futex resumed>)        = 0
[pid 16090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16091] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16090] <... futex resumed>)        = 0
[pid 16090] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16090] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16091] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16091] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16090] <... futex resumed>)        = 0
[pid 16091] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16090] exit_group(0)               = ?
[pid 16091] <... futex resumed>)        = ?
[pid 16091] +++ exited with 0 +++
[pid 16090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16092
./strace-static-x86_64: Process 16092 attached
[pid 16092] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16092] setpgid(0, 0)               = 0
[pid 16092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16092] write(3, "1000", 4)         = 4
[pid 16092] close(3)                    = 0
[pid 16092] write(1, "executing program\n", 18) = 18
[pid 16092] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16092] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16092] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16092] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16092] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16092] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16092] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16093 attached
 => {parent_tid=[16093]}, 88) = 16093
[pid 16093] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16093] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16092] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16093] <... futex resumed>)        = 0
[pid 16092] <... futex resumed>)        = 1
[pid 16093] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16093] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16092] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16093] <... futex resumed>)        = 0
[pid 16093] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16092] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16093] <... futex resumed>)        = 0
[pid 16092] <... futex resumed>)        = 1
[pid 16093] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16092] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16092] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16093] <... futex resumed>)        = 0
[pid 16092] <... futex resumed>)        = 1
[pid 16093] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16092] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16093] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16093] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16093] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16092] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16092] exit_group(0)               = ?
[pid 16093] <... futex resumed>)        = ?
[pid 16093] +++ exited with 0 +++
[pid 16092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16094
./strace-static-x86_64: Process 16094 attached
[pid 16094] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16094] setpgid(0, 0)               = 0
[pid 16094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16094] write(3, "1000", 4)         = 4
[pid 16094] close(3)                    = 0
[pid 16094] write(1, "executing program\n", 18) = 18
[pid 16094] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16094] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16094] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16094] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16094] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16094] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16094] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16095 attached
 <unfinished ...>
[pid 16095] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16095] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16095] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16094] <... clone3 resumed> => {parent_tid=[16095]}, 88) = 16095
[pid 16094] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16095] <... futex resumed>)        = 0
[pid 16094] <... futex resumed>)        = 1
[pid 16095] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16095] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16095] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16094] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16095] <... futex resumed>)        = 0
[pid 16095] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16095] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16095] <... futex resumed>)        = 0
[pid 16094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16095] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16094] <... futex resumed>)        = 0
[pid 16094] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16094] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16095] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16095] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16094] <... futex resumed>)        = 0
[pid 16095] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16094] exit_group(0)               = ?
[pid 16095] <... futex resumed>)        = ?
[pid 16095] +++ exited with 0 +++
[pid 16094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16096
./strace-static-x86_64: Process 16096 attached
[pid 16096] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16096] setpgid(0, 0)               = 0
executing program
executing program
[pid 16096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16096] write(3, "1000", 4)         = 4
[pid 16096] close(3)                    = 0
[pid 16096] write(1, "executing program\n", 18) = 18
[pid 16096] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16096] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16096] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16096] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16096] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16096] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16096] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16097 attached
 => {parent_tid=[16097]}, 88) = 16097
[pid 16097] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16097] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16097] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16096] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16097] <... futex resumed>)        = 0
[pid 16096] <... futex resumed>)        = 1
[pid 16097] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16097] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16097] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16096] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16097] <... futex resumed>)        = 0
[pid 16096] <... futex resumed>)        = 1
[pid 16097] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16097] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16096] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16097] <... futex resumed>)        = 0
[pid 16096] <... futex resumed>)        = 1
[pid 16097] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16097] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16096] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16097] <... futex resumed>)        = 0
[pid 16096] <... futex resumed>)        = 1
[pid 16097] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16096] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16097] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16097] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16096] <... futex resumed>)        = 0
[pid 16097] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16096] exit_group(0)               = ?
[pid 16097] <... futex resumed>)        = ?
[pid 16097] +++ exited with 0 +++
[pid 16096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16098
./strace-static-x86_64: Process 16098 attached
[pid 16098] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16098] setpgid(0, 0)               = 0
[pid 16098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16098] write(3, "1000", 4)         = 4
[pid 16098] close(3)                    = 0
[pid 16098] write(1, "executing program\n", 18) = 18
[pid 16098] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16098] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16098] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16098] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16098] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16098] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16098] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16099 attached
 <unfinished ...>
[pid 16099] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16099] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16098] <... clone3 resumed> => {parent_tid=[16099]}, 88) = 16099
[pid 16098] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16099] <... futex resumed>)        = 0
[pid 16099] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16099] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16098] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16099] <... futex resumed>)        = 0
[pid 16099] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16099] <... futex resumed>)        = 0
[pid 16098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16099] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16098] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16098] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16099] <... futex resumed>)        = 0
[pid 16098] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16099] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16099] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16098] <... futex resumed>)        = 0
[pid 16099] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16098] exit_group(0executing program
)               = ?
[pid 16099] <... futex resumed>)        = ?
[pid 16099] +++ exited with 0 +++
[pid 16098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16100
./strace-static-x86_64: Process 16100 attached
[pid 16100] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16100] setpgid(0, 0)               = 0
[pid 16100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16100] write(3, "1000", 4)         = 4
[pid 16100] close(3)                    = 0
[pid 16100] write(1, "executing program\n", 18) = 18
[pid 16100] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16100] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16100] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16100] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16100] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16100] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16100] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16101 attached
 <unfinished ...>
[pid 16101] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16101] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16100] <... clone3 resumed> => {parent_tid=[16101]}, 88) = 16101
[pid 16100] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16101] <... futex resumed>)        = 0
[pid 16101] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16101] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16101] <... futex resumed>)        = 0
[pid 16101] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16101] <... futex resumed>)        = 0
[pid 16101] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16100] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16101] <... futex resumed>)        = 0
[pid 16100] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16101] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16101] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16101] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16100] <... futex resumed>)        = 0
[pid 16100] exit_group(0)               = ?
[pid 16101] <... futex resumed>)        = ?
[pid 16101] +++ exited with 0 +++
[pid 16100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
executing program
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16102 attached
, child_tidptr=0x55557060c690) = 16102
[pid 16102] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16102] setpgid(0, 0)               = 0
[pid 16102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16102] write(3, "1000", 4)         = 4
[pid 16102] close(3)                    = 0
[pid 16102] write(1, "executing program\n", 18) = 18
[pid 16102] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16102] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16102] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16102] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16102] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16102] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16102] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16103 attached
 <unfinished ...>
[pid 16103] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16103] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16103] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16102] <... clone3 resumed> => {parent_tid=[16103]}, 88) = 16103
[pid 16102] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16103] <... futex resumed>)        = 0
[pid 16103] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16103] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16103] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16102] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16103] <... futex resumed>)        = 0
[pid 16103] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16103] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16103] <... futex resumed>)        = 0
[pid 16102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16103] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16102] <... futex resumed>)        = 0
[pid 16102] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16102] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16103] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16103] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16102] <... futex resumed>)        = 0
[pid 16103] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16102] exit_group(0)               = ?
[pid 16103] <... futex resumed>)        = ?
[pid 16103] +++ exited with 0 +++
[pid 16102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16104 attached
, child_tidptr=0x55557060c690) = 16104
[pid 16104] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16104] setpgid(0, 0)               = 0
[pid 16104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16104] write(3, "1000", 4)         = 4
[pid 16104] close(3)                    = 0
[pid 16104] write(1, "executing program\n", 18) = 18
[pid 16104] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16104] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16104] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16104] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16104] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16104] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16104] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16105 attached
 => {parent_tid=[16105]}, 88) = 16105
[pid 16105] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16105] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16105] <... futex resumed>)        = 0
[pid 16105] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16105] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16105] <... futex resumed>)        = 0
[pid 16105] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16105] <... futex resumed>)        = 0
[pid 16105] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16104] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16105] <... futex resumed>)        = 0
[pid 16105] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16104] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16105] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16105] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16105] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16104] exit_group(0)               = ?
[pid 16105] <... futex resumed>)        = ?
[pid 16105] +++ exited with 0 +++
[pid 16104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16106
./strace-static-x86_64: Process 16106 attached
[pid 16106] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16106] setpgid(0, 0)               = 0
[pid 16106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16106] write(3, "1000", 4)         = 4
[pid 16106] close(3)                    = 0
[pid 16106] write(1, "executing program\n", 18) = 18
[pid 16106] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16106] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16106] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16106] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16106] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16106] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16106] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16107 attached
 => {parent_tid=[16107]}, 88) = 16107
[pid 16107] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16107] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16106] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16107] <... futex resumed>)        = 0
[pid 16107] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16107] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16106] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16107] <... futex resumed>)        = 0
[pid 16107] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16106] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16107] <... futex resumed>)        = 0
[pid 16107] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16106] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16107] <... futex resumed>)        = 0
[pid 16107] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16107] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16107] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16106] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16106] exit_group(0)               = ?
[pid 16107] <... futex resumed>)        = ?
[pid 16107] +++ exited with 0 +++
[pid 16106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16108
./strace-static-x86_64: Process 16108 attached
[pid 16108] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16108] setpgid(0, 0)               = 0
[pid 16108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
executing program
[pid 16108] write(3, "1000", 4)         = 4
[pid 16108] close(3)                    = 0
[pid 16108] write(1, "executing program\n", 18) = 18
[pid 16108] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16108] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16108] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16108] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16108] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16108] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16108] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16109]}, 88) = 16109
[pid 16108] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16109 attached
 <unfinished ...>
[pid 16109] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16109] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16109] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16108] <... futex resumed>)        = 0
[pid 16108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16109] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16108] <... futex resumed>)        = 0
[pid 16108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16109] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16108] <... futex resumed>)        = 0
[pid 16108] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16108] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16109] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16109] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16108] <... futex resumed>)        = 0
[pid 16108] exit_group(0)               = ?
[pid 16109] +++ exited with 0 +++
[pid 16108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16110 attached
 <unfinished ...>
[pid 16110] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16110] setpgid(0, 0)               = 0
[pid 16110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16110] write(3, "1000", 4)         = 4
[pid 16110] close(3 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16110
executing program
[pid 16110] <... close resumed>)        = 0
[pid 16110] write(1, "executing program\n", 18) = 18
[pid 16110] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16110] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16110] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16110] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16111 attached
 => {parent_tid=[16111]}, 88) = 16111
[pid 16111] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16110] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16111] <... futex resumed>)        = 0
[pid 16111] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16111] <... futex resumed>)        = 0
[pid 16111] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16111] <... futex resumed>)        = 0
[pid 16111] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16111] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16110] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16111] <... futex resumed>)        = 0
[pid 16111] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16110] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16111] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16111] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16111] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16110] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16110] exit_group(0)               = ?
[pid 16111] <... futex resumed>)        = ?
[pid 16111] +++ exited with 0 +++
[pid 16110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16112
./strace-static-x86_64: Process 16112 attached
[pid 16112] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16112] setpgid(0, 0)               = 0
[pid 16112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16112] write(3, "1000", 4)         = 4
executing program
[pid 16112] close(3)                    = 0
[pid 16112] write(1, "executing program\n", 18) = 18
[pid 16112] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16112] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16112] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16112] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16112] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16112] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16112] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16113 attached
 <unfinished ...>
[pid 16113] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16113] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16112] <... clone3 resumed> => {parent_tid=[16113]}, 88) = 16113
[pid 16112] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16113] <... futex resumed>)        = 0
[pid 16112] <... futex resumed>)        = 1
[pid 16113] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16113] <... futex resumed>)        = 0
[pid 16112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16113] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16112] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16113] <... futex resumed>)        = 0
[pid 16112] <... futex resumed>)        = 1
[pid 16113] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16113] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16112] <... futex resumed>)        = 0
[pid 16112] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16112] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16113] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16113] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16112] <... futex resumed>)        = 0
[pid 16113] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16112] exit_group(0)               = ?
[pid 16113] <... futex resumed>)        = ?
[pid 16113] +++ exited with 0 +++
[pid 16112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16114
./strace-static-x86_64: Process 16114 attached
[pid 16114] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16114] setpgid(0, 0)               = 0
[pid 16114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16114] write(3, "1000", 4)         = 4
[pid 16114] close(3)                    = 0
executing program
[pid 16114] write(1, "executing program\n", 18) = 18
[pid 16114] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16114] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16114] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16114] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16114] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16114] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16114] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16115]}, 88) = 16115
[pid 16114] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16115 attached
 <unfinished ...>
[pid 16115] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16115] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16115] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16114] <... futex resumed>)        = 0
[pid 16114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16115] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16114] <... futex resumed>)        = 0
[pid 16114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16115] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16114] <... futex resumed>)        = 0
[pid 16114] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16114] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16115] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16115] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16114] <... futex resumed>)        = 0
[pid 16114] exit_group(0)               = ?
[pid 16115] +++ exited with 0 +++
[pid 16114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16116 attached
 <unfinished ...>
[pid 16116] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16116] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16116
[pid 16116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16116] write(3, "1000", 4)         = 4
[pid 16116] close(3)                    = 0
executing program
[pid 16116] write(1, "executing program\n", 18) = 18
[pid 16116] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16116] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16116] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16116] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16116] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16116] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16116] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16117]}, 88) = 16117
[pid 16116] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16117 attached
 <unfinished ...>
[pid 16117] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16117] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16117] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16116] <... futex resumed>)        = 0
[pid 16116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16117] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16116] <... futex resumed>)        = 0
[pid 16116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16117] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16116] <... futex resumed>)        = 0
[pid 16116] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16116] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16117] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16117] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16116] <... futex resumed>)        = 0
[pid 16116] exit_group(0)               = ?
[pid 16117] +++ exited with 0 +++
[pid 16116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16118 attached
 <unfinished ...>
[pid 16118] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16118] setpgid(0, 0)               = 0
[pid 16118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16118] write(3, "1000", 4)         = 4
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16118
[pid 16118] close(3)                    = 0
executing program
[pid 16118] write(1, "executing program\n", 18) = 18
[pid 16118] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16118] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16118] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16118] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16118] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16118] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16118] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16119 attached
 => {parent_tid=[16119]}, 88) = 16119
[pid 16118] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16119] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16119] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16119] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16118] <... futex resumed>)        = 0
[pid 16118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16119] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16118] <... futex resumed>)        = 0
[pid 16118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16119] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16118] <... futex resumed>)        = 0
[pid 16118] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16118] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16119] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16119] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16118] <... futex resumed>)        = 0
[pid 16118] exit_group(0)               = ?
[pid 16119] +++ exited with 0 +++
[pid 16118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16120 attached
, child_tidptr=0x55557060c690) = 16120
[pid 16120] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16120] setpgid(0, 0)               = 0
[pid 16120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16120] write(3, "1000", 4)         = 4
[pid 16120] close(3)                    = 0
[pid 16120] write(1, "executing program\n", 18executing program
) = 18
[pid 16120] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16120] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16120] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16120] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16120] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16120] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16120] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16121 attached
 => {parent_tid=[16121]}, 88) = 16121
[pid 16121] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16121] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16120] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16121] <... futex resumed>)        = 0
[pid 16121] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16121] <... futex resumed>)        = 0
[pid 16121] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16121] <... futex resumed>)        = 0
[pid 16121] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16120] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16121] <... futex resumed>)        = 0
[pid 16121] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16121] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16121] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16120] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16120] exit_group(0)               = ?
[pid 16121] <... futex resumed>)        = ?
[pid 16121] +++ exited with 0 +++
[pid 16120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16122
./strace-static-x86_64: Process 16122 attached
[pid 16122] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16122] setpgid(0, 0)               = 0
[pid 16122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16122] write(3, "1000", 4)         = 4
[pid 16122] close(3)                    = 0
executing program
[pid 16122] write(1, "executing program\n", 18) = 18
[pid 16122] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16122] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16122] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16122] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16122] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16122] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16122] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16123 attached
 <unfinished ...>
[pid 16123] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16123] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16122] <... clone3 resumed> => {parent_tid=[16123]}, 88) = 16123
[pid 16122] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16123] <... futex resumed>)        = 0
[pid 16123] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16123] <... futex resumed>)        = 0
[pid 16122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16123] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16122] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16123] <... futex resumed>)        = 0
[pid 16122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16123] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16122] <... futex resumed>)        = 0
[pid 16122] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16122] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16123] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16123] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16122] <... futex resumed>)        = 0
[pid 16123] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16122] exit_group(0)               = ?
[pid 16123] <... futex resumed>)        = ?
[pid 16123] +++ exited with 0 +++
[pid 16122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16124
./strace-static-x86_64: Process 16124 attached
[pid 16124] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16124] setpgid(0, 0)               = 0
[pid 16124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16124] write(3, "1000", 4)         = 4
[pid 16124] close(3)                    = 0
[pid 16124] write(1, "executing program\n", 18executing program
) = 18
[pid 16124] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16124] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16124] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16124] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16124] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16124] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16124] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16125]}, 88) = 16125
[pid 16124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16125 attached
 <unfinished ...>
[pid 16125] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16125] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16124] <... futex resumed>)        = 0
[pid 16124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16125] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16124] <... futex resumed>)        = 0
[pid 16124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16125] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16124] <... futex resumed>)        = 0
[pid 16124] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16124] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16125] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16125] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16124] <... futex resumed>)        = 0
[pid 16124] exit_group(0)               = ?
[pid 16125] +++ exited with 0 +++
[pid 16124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16126 attached
 <unfinished ...>
[pid 16126] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16126] setpgid(0, 0)               = 0
[pid 16126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16126
[pid 16126] <... openat resumed>)       = 3
[pid 16126] write(3, "1000", 4)         = 4
[pid 16126] close(3executing program
)                    = 0
[pid 16126] write(1, "executing program\n", 18) = 18
[pid 16126] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16126] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16126] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16126] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16126] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16126] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16126] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16127]}, 88) = 16127
[pid 16126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16127 attached
 <unfinished ...>
[pid 16127] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16127] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16127] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16126] <... futex resumed>)        = 0
[pid 16126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16127] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16126] <... futex resumed>)        = 0
[pid 16126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16127] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16126] <... futex resumed>)        = 0
[pid 16126] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16126] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16127] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16127] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16126] <... futex resumed>)        = 0
[pid 16126] exit_group(0)               = ?
[pid 16127] +++ exited with 0 +++
[pid 16126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16128 attached
 <unfinished ...>
[pid 16128] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16128] setpgid(0, 0)               = 0
[pid 16128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16128
[pid 16128] <... openat resumed>)       = 3
[pid 16128] write(3, "1000", 4)         = 4
[pid 16128] close(3executing program
)                    = 0
[pid 16128] write(1, "executing program\n", 18) = 18
[pid 16128] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16128] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16128] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16128] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16128] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16128] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16128] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16129]}, 88) = 16129
[pid 16128] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16129 attached
 <unfinished ...>
[pid 16129] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16129] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16129] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16128] <... futex resumed>)        = 0
[pid 16128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16129] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16128] <... futex resumed>)        = 0
[pid 16128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16129] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16128] <... futex resumed>)        = 0
[pid 16128] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16128] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16129] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16129] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16128] <... futex resumed>)        = 0
[pid 16128] exit_group(0)               = ?
[pid 16129] <... futex resumed>)        = ?
[pid 16129] +++ exited with 0 +++
[pid 16128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16130
./strace-static-x86_64: Process 16130 attached
[pid 16130] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16130] setpgid(0, 0)               = 0
[pid 16130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16130] write(3, "1000", 4)         = 4
[pid 16130] close(3)                    = 0
[pid 16130] write(1, "executing program\n", 18executing program
) = 18
[pid 16130] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16130] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16130] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16130] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16131 attached
 => {parent_tid=[16131]}, 88) = 16131
[pid 16131] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16131] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16131] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16130] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16131] <... futex resumed>)        = 0
[pid 16130] <... futex resumed>)        = 1
[pid 16131] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16131] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16131] <... futex resumed>)        = 0
[pid 16130] <... futex resumed>)        = 1
[pid 16131] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16131] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16131] <... futex resumed>)        = 0
[pid 16131] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16131] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16130] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16131] <... futex resumed>)        = 0
[pid 16131] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16131] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16131] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16130] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16130] exit_group(0)               = ?
[pid 16131] <... futex resumed>)        = ?
[pid 16131] +++ exited with 0 +++
[pid 16130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16132
./strace-static-x86_64: Process 16132 attached
[pid 16132] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16132] setpgid(0, 0)               = 0
[pid 16132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16132] write(3, "1000", 4)         = 4
[pid 16132] close(3executing program
)                    = 0
[pid 16132] write(1, "executing program\n", 18) = 18
[pid 16132] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16132] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16132] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16132] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16132] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16132] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16132] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16133 attached
 <unfinished ...>
[pid 16133] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16133] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16133] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16132] <... clone3 resumed> => {parent_tid=[16133]}, 88) = 16133
[pid 16132] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16133] <... futex resumed>)        = 0
[pid 16133] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16133] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16133] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16132] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16133] <... futex resumed>)        = 0
[pid 16133] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16133] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16133] <... futex resumed>)        = 0
[pid 16132] <... futex resumed>)        = 1
[pid 16133] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16133] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16133] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16132] <... futex resumed>)        = 0
[pid 16133] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16132] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16132] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16133] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16133] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16133] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16132] <... futex resumed>)        = 0
[pid 16132] exit_group(0)               = ?
[pid 16133] <... futex resumed>)        = ?
[pid 16133] +++ exited with 0 +++
[pid 16132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16134
./strace-static-x86_64: Process 16134 attached
[pid 16134] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16134] setpgid(0, 0)               = 0
[pid 16134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16134] write(3, "1000", 4)         = 4
[pid 16134] close(3)                    = 0
executing program
[pid 16134] write(1, "executing program\n", 18) = 18
[pid 16134] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16134] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16134] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16134] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16134] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16134] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16134] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16135 attached
 => {parent_tid=[16135]}, 88) = 16135
[pid 16135] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16135] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16135] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16134] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16135] <... futex resumed>)        = 0
[pid 16134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16135] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16135] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16134] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16135] <... futex resumed>)        = 0
[pid 16135] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16135] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16135] <... futex resumed>)        = 0
[pid 16134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16135] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16135] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16134] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16134] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16135] <... futex resumed>)        = 0
[pid 16134] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16135] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16135] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16135] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16134] <... futex resumed>)        = 0
[pid 16134] exit_group(0)               = ?
[pid 16135] <... futex resumed>)        = ?
[pid 16135] +++ exited with 0 +++
[pid 16134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16136
./strace-static-x86_64: Process 16136 attached
[pid 16136] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16136] setpgid(0, 0)               = 0
[pid 16136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16136] write(3, "1000", 4)         = 4
[pid 16136] close(3)                    = 0
[pid 16136] write(1, "executing program\n", 18executing program
) = 18
[pid 16136] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16136] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16136] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16136] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16136] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16136] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16136] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16137]}, 88) = 16137
[pid 16136] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16137 attached
 <unfinished ...>
[pid 16137] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16137] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16137] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16136] <... futex resumed>)        = 0
[pid 16137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16137] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16137] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16136] <... futex resumed>)        = 0
[pid 16136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16137] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16136] <... futex resumed>)        = 0
[pid 16136] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16136] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16137] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16137] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16136] <... futex resumed>)        = 0
[pid 16136] exit_group(0 <unfinished ...>
[pid 16137] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16136] <... exit_group resumed>)   = ?
[pid 16137] <... futex resumed>)        = ?
[pid 16137] +++ exited with 0 +++
[pid 16136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16138
./strace-static-x86_64: Process 16138 attached
[pid 16138] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16138] setpgid(0, 0)               = 0
[pid 16138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16138] write(3, "1000", 4)         = 4
[pid 16138] close(3)                    = 0
[pid 16138] write(1, "executing program\n", 18executing program
) = 18
[pid 16138] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16138] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16138] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16138] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16138] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16138] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16138] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16139 attached
 => {parent_tid=[16139]}, 88) = 16139
[pid 16139] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16139] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16138] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16139] <... futex resumed>)        = 0
[pid 16139] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16139] <... futex resumed>)        = 0
[pid 16139] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16139] <... futex resumed>)        = 0
[pid 16139] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16138] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16139] <... futex resumed>)        = 0
[pid 16139] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16139] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16138] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16139] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16138] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16138] exit_group(0)               = ?
[pid 16139] <... futex resumed>)        = ?
[pid 16139] +++ exited with 0 +++
[pid 16138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16140
./strace-static-x86_64: Process 16140 attached
[pid 16140] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16140] setpgid(0, 0)               = 0
[pid 16140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16140] write(3, "1000", 4)         = 4
[pid 16140] close(3)                    = 0
executing program
[pid 16140] write(1, "executing program\n", 18) = 18
[pid 16140] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16140] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16140] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16140] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16140] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16140] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16140] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16141 attached
 => {parent_tid=[16141]}, 88) = 16141
[pid 16141] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16141] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16141] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16140] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16141] <... futex resumed>)        = 0
[pid 16141] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16141] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16140] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16141] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16141] <... futex resumed>)        = 0
[pid 16141] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16141] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16140] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16141] <... futex resumed>)        = 0
[pid 16141] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16140] <... futex resumed>)        = 0
[pid 16141] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16140] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16141] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16140] <... futex resumed>)        = 0
[pid 16140] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16141] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16141] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16140] <... futex resumed>)        = 0
[pid 16141] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16140] exit_group(0)               = ?
[pid 16141] <... futex resumed>)        = ?
[pid 16141] +++ exited with 0 +++
[pid 16140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16142
./strace-static-x86_64: Process 16142 attached
[pid 16142] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16142] setpgid(0, 0)               = 0
[pid 16142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16142] write(3, "1000", 4)         = 4
[pid 16142] close(3)                    = 0
[pid 16142] write(1, "executing program\n", 18executing program
) = 18
[pid 16142] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16142] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16142] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16142] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16142] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16142] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16142] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16143]}, 88) = 16143
[pid 16142] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16143 attached
 <unfinished ...>
[pid 16143] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16143] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16143] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16142] <... futex resumed>)        = 0
[pid 16142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16143] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16142] <... futex resumed>)        = 0
[pid 16142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16143] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16142] <... futex resumed>)        = 0
[pid 16142] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16142] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16143] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16143] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16142] <... futex resumed>)        = 0
[pid 16142] exit_group(0)               = ?
[pid 16143] +++ exited with 0 +++
[pid 16142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16144 attached
 <unfinished ...>
[pid 16144] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16144] setpgid(0, 0)               = 0
[pid 16144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16144] write(3, "1000", 4)         = 4
[pid 16144] close(3)                    = 0
executing program
[pid 16144] write(1, "executing program\n", 18) = 18
[pid 16144] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16144] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16144] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16144] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16144] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16144] rt_sigprocmask(SIG_BLOCK, ~[],  <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16144
[pid 16144] <... rt_sigprocmask resumed>[], 8) = 0
[pid 16144] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16145]}, 88) = 16145
[pid 16144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16145 attached
 <unfinished ...>
[pid 16145] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16145] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16145] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16144] <... futex resumed>)        = 0
[pid 16144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16145] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16144] <... futex resumed>)        = 0
[pid 16144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16145] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16144] <... futex resumed>)        = 0
[pid 16144] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16144] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16145] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16145] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16144] <... futex resumed>)        = 0
[pid 16144] exit_group(0)               = ?
[pid 16145] +++ exited with 0 +++
[pid 16144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16146
./strace-static-x86_64: Process 16146 attached
[pid 16146] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16146] setpgid(0, 0)               = 0
[pid 16146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16146] write(3, "1000", 4)         = 4
[pid 16146] close(3)                    = 0
[pid 16146] write(1, "executing program\n", 18executing program
) = 18
[pid 16146] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16146] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16146] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16146] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16146] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16146] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16146] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16147 attached
 <unfinished ...>
[pid 16147] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16147] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16146] <... clone3 resumed> => {parent_tid=[16147]}, 88) = 16147
[pid 16146] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16147] <... futex resumed>)        = 0
[pid 16147] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16147] <... futex resumed>)        = 0
[pid 16147] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16147] <... futex resumed>)        = 0
[pid 16147] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16146] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16147] <... futex resumed>)        = 0
[pid 16146] <... futex resumed>)        = 1
[pid 16147] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16147] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16147] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16146] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16146] exit_group(0)               = ?
[pid 16147] <... futex resumed>)        = ?
[pid 16147] +++ exited with 0 +++
[pid 16146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16148 attached
, child_tidptr=0x55557060c690) = 16148
[pid 16148] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16148] setpgid(0, 0)               = 0
[pid 16148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16148] write(3, "1000", 4)         = 4
[pid 16148] close(3)                    = 0
[pid 16148] write(1, "executing program\n", 18executing program
) = 18
[pid 16148] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16148] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16148] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16148] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16148] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16148] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16148] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16149 attached
 => {parent_tid=[16149]}, 88) = 16149
[pid 16149] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16149] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16149] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16148] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16149] <... futex resumed>)        = 0
[pid 16149] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16149] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16149] <... futex resumed>)        = 0
[pid 16148] <... futex resumed>)        = 1
[pid 16149] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16149] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16149] <... futex resumed>)        = 0
[pid 16148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16149] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16149] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16148] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16148] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16149] <... futex resumed>)        = 0
[pid 16149] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16149] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16149] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16148] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16148] exit_group(0)               = ?
[pid 16149] <... futex resumed>)        = ?
[pid 16149] +++ exited with 0 +++
[pid 16148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16150
./strace-static-x86_64: Process 16150 attached
[pid 16150] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16150] setpgid(0, 0)               = 0
[pid 16150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16150] write(3, "1000", 4)         = 4
[pid 16150] close(3)                    = 0
executing program
[pid 16150] write(1, "executing program\n", 18) = 18
[pid 16150] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16150] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16150] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16150] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16150] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16151 attached
 <unfinished ...>
[pid 16151] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16151] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16151] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16150] <... clone3 resumed> => {parent_tid=[16151]}, 88) = 16151
[pid 16150] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16151] <... futex resumed>)        = 0
[pid 16151] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16151] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16151] <... futex resumed>)        = 0
[pid 16151] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16151] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16151] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16150] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16151] <... futex resumed>)        = 0
[pid 16150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16151] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16150] <... futex resumed>)        = 0
[pid 16151] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16150] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16151] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16150] <... futex resumed>)        = 0
[pid 16150] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16151] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16151] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16150] <... futex resumed>)        = 0
[pid 16151] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16150] exit_group(0)               = ?
[pid 16151] <... futex resumed>)        = ?
[pid 16151] +++ exited with 0 +++
[pid 16150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16152 attached
, child_tidptr=0x55557060c690) = 16152
[pid 16152] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16152] setpgid(0, 0)               = 0
[pid 16152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16152] write(3, "1000", 4)         = 4
[pid 16152] close(3)                    = 0
[pid 16152] write(1, "executing program\n", 18executing program
) = 18
[pid 16152] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16152] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16152] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16152] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16152] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16152] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16152] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16153]}, 88) = 16153
[pid 16152] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16153 attached
 <unfinished ...>
[pid 16153] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16153] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16153] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16152] <... futex resumed>)        = 0
[pid 16152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16153] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16152] <... futex resumed>)        = 0
[pid 16153] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16153] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16153] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16152] <... futex resumed>)        = 0
[pid 16152] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16152] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16153] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16153] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16152] <... futex resumed>)        = 0
[pid 16152] exit_group(0)               = ?
[pid 16153] +++ exited with 0 +++
[pid 16152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16154
./strace-static-x86_64: Process 16154 attached
[pid 16154] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16154] setpgid(0, 0)               = 0
[pid 16154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16154] write(3, "1000", 4)         = 4
[pid 16154] close(3)                    = 0
[pid 16154] write(1, "executing program\n", 18executing program
) = 18
[pid 16154] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16154] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16154] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16154] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16154] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16154] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16154] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16155 attached
 => {parent_tid=[16155]}, 88) = 16155
[pid 16155] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16155] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16154] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16155] <... futex resumed>)        = 0
[pid 16155] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16154] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16155] <... futex resumed>)        = 0
[pid 16155] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16154] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16155] <... futex resumed>)        = 0
[pid 16154] <... futex resumed>)        = 1
[pid 16155] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16154] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16155] <... futex resumed>)        = 0
[pid 16155] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16154] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16155] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16155] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16155] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16154] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16154] exit_group(0)               = ?
[pid 16155] <... futex resumed>)        = ?
[pid 16155] +++ exited with 0 +++
[pid 16154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16156
./strace-static-x86_64: Process 16156 attached
[pid 16156] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16156] setpgid(0, 0)               = 0
[pid 16156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16156] write(3, "1000", 4)         = 4
[pid 16156] close(3)                    = 0
[pid 16156] write(1, "executing program\n", 18executing program
) = 18
[pid 16156] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16156] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16156] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16156] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16156] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16156] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16156] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16157]}, 88) = 16157
[pid 16156] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16157 attached
 <unfinished ...>
[pid 16157] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16157] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16157] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16156] <... futex resumed>)        = 0
[pid 16156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16157] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16156] <... futex resumed>)        = 0
[pid 16156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16157] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16156] <... futex resumed>)        = 0
[pid 16156] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16156] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16157] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16157] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16156] <... futex resumed>)        = 0
[pid 16156] exit_group(0)               = ?
[pid 16157] +++ exited with 0 +++
[pid 16156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16158
./strace-static-x86_64: Process 16158 attached
[pid 16158] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16158] setpgid(0, 0)               = 0
[pid 16158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16158] write(3, "1000", 4)         = 4
[pid 16158] close(3)                    = 0
[pid 16158] write(1, "executing program\n", 18executing program
) = 18
[pid 16158] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16158] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16158] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16158] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16158] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16158] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16158] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16159 attached
 => {parent_tid=[16159]}, 88) = 16159
[pid 16159] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16159] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16158] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16159] <... futex resumed>)        = 0
[pid 16158] <... futex resumed>)        = 1
[pid 16159] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16159] <... futex resumed>)        = 0
[pid 16159] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16159] <... futex resumed>)        = 0
[pid 16159] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16158] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16159] <... futex resumed>)        = 0
[pid 16159] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16158] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16159] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16159] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16159] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16158] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16158] exit_group(0)               = ?
[pid 16159] <... futex resumed>)        = ?
[pid 16159] +++ exited with 0 +++
[pid 16158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16160
./strace-static-x86_64: Process 16160 attached
[pid 16160] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16160] setpgid(0, 0)               = 0
[pid 16160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16160] write(3, "1000", 4)         = 4
[pid 16160] close(3)                    = 0
[pid 16160] write(1, "executing program\n", 18executing program
) = 18
[pid 16160] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16160] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16160] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16160] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16160] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16160] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16160] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16161 attached
 => {parent_tid=[16161]}, 88) = 16161
[pid 16161] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16161] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16161] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16160] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16161] <... futex resumed>)        = 0
[pid 16160] <... futex resumed>)        = 1
[pid 16161] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16161] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16161] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16160] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16161] <... futex resumed>)        = 0
[pid 16161] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16161] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16161] <... futex resumed>)        = 0
[pid 16160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16161] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16161] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16160] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16160] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16161] <... futex resumed>)        = 0
[pid 16161] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16161] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16161] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16160] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16160] exit_group(0)               = ?
[pid 16161] <... futex resumed>)        = ?
[pid 16161] +++ exited with 0 +++
[pid 16160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16162
./strace-static-x86_64: Process 16162 attached
[pid 16162] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16162] setpgid(0, 0)               = 0
[pid 16162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16162] write(3, "1000", 4)         = 4
[pid 16162] close(3)                    = 0
[pid 16162] write(1, "executing program\n", 18executing program
) = 18
[pid 16162] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16162] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16162] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16162] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16162] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16162] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16162] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16163 attached
 => {parent_tid=[16163]}, 88) = 16163
[pid 16163] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16163] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16162] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16163] <... futex resumed>)        = 0
[pid 16162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16163] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16162] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16163] <... futex resumed>)        = 0
[pid 16163] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16163] <... futex resumed>)        = 0
[pid 16162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16163] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16162] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16162] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16163] <... futex resumed>)        = 0
[pid 16163] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16163] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16163] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16162] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16162] exit_group(0)               = ?
[pid 16163] <... futex resumed>)        = ?
[pid 16163] +++ exited with 0 +++
[pid 16162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16164
./strace-static-x86_64: Process 16164 attached
[pid 16164] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16164] setpgid(0, 0)               = 0
[pid 16164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16164] write(3, "1000", 4)         = 4
[pid 16164] close(3)                    = 0
[pid 16164] write(1, "executing program\n", 18executing program
) = 18
[pid 16164] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16164] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16164] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16164] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16164] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16164] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16164] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16165 attached
 => {parent_tid=[16165]}, 88) = 16165
[pid 16165] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16165] <... futex resumed>)        = 0
[pid 16164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16165] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16164] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16165] <... futex resumed>)        = 0
[pid 16165] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16164] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16165] <... futex resumed>)        = 0
[pid 16164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16165] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16164] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16164] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16165] <... futex resumed>)        = 0
[pid 16165] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16164] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16165] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16165] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16165] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16164] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16164] exit_group(0)               = ?
[pid 16165] <... futex resumed>)        = ?
[pid 16165] +++ exited with 0 +++
[pid 16164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16166
./strace-static-x86_64: Process 16166 attached
[pid 16166] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16166] setpgid(0, 0)               = 0
[pid 16166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16166] write(3, "1000", 4)         = 4
[pid 16166] close(3)                    = 0
[pid 16166] write(1, "executing program\n", 18executing program
) = 18
[pid 16166] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16166] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16166] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16166] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16166] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16166] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16166] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16167]}, 88) = 16167
[pid 16166] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16167 attached
 <unfinished ...>
[pid 16167] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16167] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16167] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16166] <... futex resumed>)        = 0
[pid 16166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16167] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16166] <... futex resumed>)        = 0
[pid 16166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16167] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16166] <... futex resumed>)        = 0
[pid 16166] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16166] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16167] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16167] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16166] <... futex resumed>)        = 0
[pid 16166] exit_group(0)               = ?
[pid 16167] +++ exited with 0 +++
[pid 16166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16168 attached
 <unfinished ...>
[pid 16168] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16168] setpgid(0, 0)               = 0
[pid 16168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16168] write(3, "1000", 4executing program
)         = 4
[pid 16168] close(3)                    = 0
[pid 16168] write(1, "executing program\n", 18) = 18
[pid 16168] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16168] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16168] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16168] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16168] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16168
[pid 16168] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16168] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16169 attached
 => {parent_tid=[16169]}, 88) = 16169
[pid 16168] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16169] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16169] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16169] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16168] <... futex resumed>)        = 0
[pid 16168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16169] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16168] <... futex resumed>)        = 0
[pid 16168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16169] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16168] <... futex resumed>)        = 0
[pid 16168] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16168] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16169] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16169] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16168] <... futex resumed>)        = 0
[pid 16168] exit_group(0)               = ?
[pid 16169] +++ exited with 0 +++
[pid 16168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16170 attached
 <unfinished ...>
[pid 16170] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16170] setpgid(0, 0)               = 0
[pid 16170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16170
[pid 16170] <... openat resumed>)       = 3
[pid 16170] write(3, "1000", 4)         = 4
[pid 16170] close(3)                    = 0
executing program
[pid 16170] write(1, "executing program\n", 18) = 18
[pid 16170] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16170] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16170] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16170] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16171]}, 88) = 16171
[pid 16170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16171 attached
 <unfinished ...>
[pid 16171] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16171] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16171] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16170] <... futex resumed>)        = 0
[pid 16170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16171] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16170] <... futex resumed>)        = 0
[pid 16170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16171] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16170] <... futex resumed>)        = 0
[pid 16170] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16170] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16171] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16171] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16170] <... futex resumed>)        = 0
[pid 16170] exit_group(0)               = ?
[pid 16171] +++ exited with 0 +++
[pid 16170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16172 attached
 <unfinished ...>
[pid 16172] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16172] setpgid(0, 0)               = 0
[pid 16172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16172
[pid 16172] write(3, "1000", 4)         = 4
[pid 16172] close(3)                    = 0
executing program
[pid 16172] write(1, "executing program\n", 18) = 18
[pid 16172] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16172] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16172] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16172] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16172] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16172] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16172] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16173]}, 88) = 16173
[pid 16172] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16173 attached
 <unfinished ...>
[pid 16173] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16173] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16173] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16172] <... futex resumed>)        = 0
[pid 16172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16173] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16172] <... futex resumed>)        = 0
[pid 16172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16173] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16172] <... futex resumed>)        = 0
[pid 16172] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16172] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16173] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16173] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16172] <... futex resumed>)        = 0
[pid 16172] exit_group(0)               = ?
[pid 16173] +++ exited with 0 +++
[pid 16172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16174 attached
 <unfinished ...>
[pid 16174] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16174] setpgid(0, 0)               = 0
[pid 16174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16174
[pid 16174] <... openat resumed>)       = 3
[pid 16174] write(3, "1000", 4)         = 4
executing program
[pid 16174] close(3)                    = 0
[pid 16174] write(1, "executing program\n", 18) = 18
[pid 16174] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16174] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16174] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16174] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16174] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16174] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16174] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16175 attached
 => {parent_tid=[16175]}, 88) = 16175
[pid 16175] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16175] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16174] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16175] <... futex resumed>)        = 0
[pid 16174] <... futex resumed>)        = 1
[pid 16175] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16175] <... futex resumed>)        = 0
[pid 16175] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16175] <... futex resumed>)        = 0
[pid 16175] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16174] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16175] <... futex resumed>)        = 0
[pid 16174] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16175] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16175] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16175] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16174] <... futex resumed>)        = 0
[pid 16174] exit_group(0)               = ?
[pid 16175] <... futex resumed>)        = ?
[pid 16175] +++ exited with 0 +++
[pid 16174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16176
./strace-static-x86_64: Process 16176 attached
[pid 16176] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16176] setpgid(0, 0)               = 0
[pid 16176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16176] write(3, "1000", 4)         = 4
[pid 16176] close(3executing program
)                    = 0
[pid 16176] write(1, "executing program\n", 18) = 18
[pid 16176] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16176] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16176] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16176] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16176] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16176] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16176] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16177 attached
 <unfinished ...>
[pid 16177] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16177] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16177] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16176] <... clone3 resumed> => {parent_tid=[16177]}, 88) = 16177
[pid 16176] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16177] <... futex resumed>)        = 0
[pid 16176] <... futex resumed>)        = 1
[pid 16177] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16177] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16177] <... futex resumed>)        = 0
[pid 16176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16177] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16177] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16176] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16177] <... futex resumed>)        = 0
[pid 16176] <... futex resumed>)        = 1
[pid 16176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16177] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16176] <... futex resumed>)        = 0
[pid 16176] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16176] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16177] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16177] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16176] <... futex resumed>)        = 0
[pid 16177] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16176] exit_group(0)               = ?
[pid 16177] <... futex resumed>)        = ?
[pid 16177] +++ exited with 0 +++
[pid 16176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16178
./strace-static-x86_64: Process 16178 attached
[pid 16178] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16178] setpgid(0, 0)               = 0
[pid 16178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16178] write(3, "1000", 4)         = 4
[pid 16178] close(3)                    = 0
executing program
[pid 16178] write(1, "executing program\n", 18) = 18
[pid 16178] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16178] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16178] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16178] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16178] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16178] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16178] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16179]}, 88) = 16179
./strace-static-x86_64: Process 16179 attached
[pid 16178] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16179] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16179] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16179] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16178] <... futex resumed>)        = 0
[pid 16178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16179] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16178] <... futex resumed>)        = 0
[pid 16178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16179] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16178] <... futex resumed>)        = 0
[pid 16178] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16178] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16179] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16179] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16178] <... futex resumed>)        = 0
[pid 16178] exit_group(0)               = ?
[pid 16179] +++ exited with 0 +++
[pid 16178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16180 attached
 <unfinished ...>
[pid 16180] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16180] setpgid(0, 0)               = 0
[pid 16180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16180
[pid 16180] <... openat resumed>)       = 3
[pid 16180] write(3, "1000", 4)         = 4
executing program
[pid 16180] close(3)                    = 0
[pid 16180] write(1, "executing program\n", 18) = 18
[pid 16180] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16180] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16180] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16180] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16180] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16180] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16180] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16181]}, 88) = 16181
[pid 16180] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16181 attached
 <unfinished ...>
[pid 16181] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16181] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16181] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16180] <... futex resumed>)        = 0
[pid 16180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16181] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16180] <... futex resumed>)        = 0
[pid 16180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16181] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16180] <... futex resumed>)        = 0
[pid 16180] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16180] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16181] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16181] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16180] <... futex resumed>)        = 0
[pid 16180] exit_group(0)               = ?
[pid 16181] +++ exited with 0 +++
[pid 16180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16182 attached
, child_tidptr=0x55557060c690) = 16182
[pid 16182] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16182] setpgid(0, 0)               = 0
[pid 16182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16182] write(3, "1000", 4)         = 4
[pid 16182] close(3)                    = 0
[pid 16182] write(1, "executing program\n", 18executing program
) = 18
[pid 16182] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16182] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16182] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16182] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16182] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16182] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16182] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16183 attached
 => {parent_tid=[16183]}, 88) = 16183
[pid 16183] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16183] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16183] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16182] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16183] <... futex resumed>)        = 0
[pid 16183] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16183] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16183] <... futex resumed>)        = 0
[pid 16183] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16183] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16183] <... futex resumed>)        = 0
[pid 16183] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16183] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16182] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16183] <... futex resumed>)        = 0
[pid 16182] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16183] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16183] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16183] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16182] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16182] exit_group(0)               = ?
[pid 16183] <... futex resumed>)        = ?
[pid 16183] +++ exited with 0 +++
[pid 16182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16184
./strace-static-x86_64: Process 16184 attached
[pid 16184] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16184] setpgid(0, 0)               = 0
[pid 16184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16184] write(3, "1000", 4)         = 4
[pid 16184] close(3)                    = 0
[pid 16184] write(1, "executing program\n", 18executing program
) = 18
[pid 16184] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16184] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16184] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16184] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16184] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16184] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16184] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16185 attached
 => {parent_tid=[16185]}, 88) = 16185
[pid 16185] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16185] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16185] <... futex resumed>)        = 0
[pid 16184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16185] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16184] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16185] <... futex resumed>)        = 0
[pid 16185] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16185] <... futex resumed>)        = 0
[pid 16184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16185] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16184] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16184] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16185] <... futex resumed>)        = 0
[pid 16184] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16185] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16185] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16184] <... futex resumed>)        = 0
[pid 16185] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16184] exit_group(0)               = ?
[pid 16185] <... futex resumed>)        = ?
[pid 16185] +++ exited with 0 +++
[pid 16184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16186
./strace-static-x86_64: Process 16186 attached
[pid 16186] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16186] setpgid(0, 0)               = 0
[pid 16186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16186] write(3, "1000", 4executing program
)         = 4
[pid 16186] close(3)                    = 0
[pid 16186] write(1, "executing program\n", 18) = 18
[pid 16186] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16186] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16186] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16186] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16186] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16186] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16186] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16187]}, 88) = 16187
[pid 16186] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16187 attached
 <unfinished ...>
[pid 16187] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16187] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16187] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16186] <... futex resumed>)        = 0
[pid 16186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16187] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16186] <... futex resumed>)        = 0
[pid 16186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16187] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16186] <... futex resumed>)        = 0
[pid 16186] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16186] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16187] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16187] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16186] <... futex resumed>)        = 0
[pid 16186] exit_group(0)               = ?
[pid 16187] +++ exited with 0 +++
[pid 16186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16188 attached
 <unfinished ...>
[pid 16188] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16188] setpgid(0, 0)               = 0
[pid 16188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16188
[pid 16188] <... openat resumed>)       = 3
[pid 16188] write(3, "1000", 4)         = 4
[pid 16188] close(3)                    = 0
[pid 16188] write(1, "executing program\n", 18executing program
) = 18
[pid 16188] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16188] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16188] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16188] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16188] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16188] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16188] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16189 attached
 => {parent_tid=[16189]}, 88) = 16189
[pid 16189] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16188] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16189] <... set_robust_list resumed>) = 0
[pid 16189] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16188] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16189] <... futex resumed>)        = 0
[pid 16189] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16189] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16189] <... futex resumed>)        = 0
[pid 16189] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16189] <... futex resumed>)        = 0
[pid 16189] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16188] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16189] <... futex resumed>)        = 0
[pid 16188] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16189] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16189] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16189] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16188] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16188] exit_group(0)               = ?
[pid 16189] <... futex resumed>)        = ?
[pid 16189] +++ exited with 0 +++
[pid 16188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16190
./strace-static-x86_64: Process 16190 attached
[pid 16190] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16190] setpgid(0, 0)               = 0
[pid 16190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16190] write(3, "1000", 4)         = 4
[pid 16190] close(3)                    = 0
[pid 16190] write(1, "executing program\n", 18) = 18
executing program
[pid 16190] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16190] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16190] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16190] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16191]}, 88) = 16191
./strace-static-x86_64: Process 16191 attached
[pid 16190] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16191] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16191] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16191] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16190] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16191] <... futex resumed>)        = 0
[pid 16191] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16191] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16191] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16191] <... futex resumed>)        = 0
[pid 16190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16191] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16191] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16191] <... futex resumed>)        = 0
[pid 16190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16191] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16191] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16190] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16190] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16191] <... futex resumed>)        = 0
[pid 16190] <... futex resumed>)        = 1
[pid 16190] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16191] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16191] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16190] <... futex resumed>)        = 0
[pid 16191] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16190] exit_group(0)               = ?
[pid 16191] <... futex resumed>)        = ?
[pid 16191] +++ exited with 0 +++
[pid 16190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16192 attached
, child_tidptr=0x55557060c690) = 16192
[pid 16192] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16192] setpgid(0, 0)               = 0
[pid 16192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16192] write(3, "1000", 4)         = 4
[pid 16192] close(3)                    = 0
[pid 16192] write(1, "executing program\n", 18executing program
) = 18
[pid 16192] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16192] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16192] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16192] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16192] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16192] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16192] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16193]}, 88) = 16193
[pid 16192] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16193 attached
 <unfinished ...>
[pid 16193] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16193] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16193] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16192] <... futex resumed>)        = 0
[pid 16192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16193] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16193] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16192] <... futex resumed>)        = 0
[pid 16192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16193] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16193] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16192] <... futex resumed>)        = 0
[pid 16192] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16192] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16193] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16193] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 1
[pid 16192] <... futex resumed>)        = 0
[pid 16192] exit_group(0)               = ?
[pid 16193] +++ exited with 0 +++
[pid 16192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16194
./strace-static-x86_64: Process 16194 attached
[pid 16194] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16194] setpgid(0, 0)               = 0
[pid 16194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16194] write(3, "1000", 4)         = 4
[pid 16194] close(3)                    = 0
[pid 16194] write(1, "executing program\n", 18) = 18
[pid 16194] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16194] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16194] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16194] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16194] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16194] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16194] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16195 attached
 => {parent_tid=[16195]}, 88) = 16195
[pid 16195] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16195] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16194] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16195] <... futex resumed>)        = 0
[pid 16195] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16195] <... futex resumed>)        = 0
[pid 16194] <... futex resumed>)        = 1
[pid 16195] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16195] <... futex resumed>)        = 0
[pid 16195] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16194] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16195] <... futex resumed>)        = 0
[pid 16195] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16194] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16195] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16195] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16195] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16194] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16194] exit_group(0)               = ?
[pid 16195] <... futex resumed>)        = ?
[pid 16195] +++ exited with 0 +++
[pid 16194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16196 attached
, child_tidptr=0x55557060c690) = 16196
[pid 16196] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16196] setpgid(0, 0)               = 0
[pid 16196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16196] write(3, "1000", 4)         = 4
[pid 16196] close(3)                    = 0
[pid 16196] write(1, "executing program\n", 18executing program
) = 18
[pid 16196] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16196] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16196] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16196] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16196] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16196] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16196] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16197]}, 88) = 16197
[pid 16196] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16197 attached
 <unfinished ...>
[pid 16197] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16197] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16197] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16196] <... futex resumed>)        = 0
[pid 16196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16197] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16196] <... futex resumed>)        = 0
[pid 16196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16197] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16196] <... futex resumed>)        = 0
[pid 16196] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16196] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16197] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16197] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 1
[pid 16196] <... futex resumed>)        = 0
[pid 16196] exit_group(0)               = ?
[pid 16197] +++ exited with 0 +++
[pid 16196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16198 attached
 <unfinished ...>
[pid 16198] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16198
[pid 16198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16198] setpgid(0, 0)               = 0
[pid 16198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16198] write(3, "1000", 4)         = 4
[pid 16198] close(3)                    = 0
[pid 16198] write(1, "executing program\n", 18) = 18
[pid 16198] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16198] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16198] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16198] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16198] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16198] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16198] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16199 attached
 => {parent_tid=[16199]}, 88) = 16199
[pid 16199] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16199] <... futex resumed>)        = 0
[pid 16199] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16199] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16199] <... futex resumed>)        = 0
[pid 16199] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16198] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16199] <... futex resumed>)        = 0
[pid 16199] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16198] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16199] <... futex resumed>)        = 0
[pid 16199] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16199] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16199] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16198] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16198] exit_group(0)               = ?
[pid 16199] <... futex resumed>)        = ?
[pid 16199] +++ exited with 0 +++
[pid 16198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16200
./strace-static-x86_64: Process 16200 attached
[pid 16200] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16200] setpgid(0, 0)               = 0
[pid 16200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16200] write(3, "1000", 4)         = 4
[pid 16200] close(3executing program
)                    = 0
[pid 16200] write(1, "executing program\n", 18) = 18
[pid 16200] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16200] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16200] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16200] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16200] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16200] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16200] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16201]}, 88) = 16201
[pid 16200] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16201 attached
 <unfinished ...>
[pid 16201] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16201] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16201] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16200] <... futex resumed>)        = 0
[pid 16200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16201] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16200] <... futex resumed>)        = 0
[pid 16200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16201] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16200] <... futex resumed>)        = 0
[pid 16200] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16200] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16201] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16201] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16200] <... futex resumed>)        = 0
[pid 16200] exit_group(0)               = ?
[pid 16201] +++ exited with 0 +++
[pid 16200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16202 attached
 <unfinished ...>
[pid 16202] set_robust_list(0x55557060c6a0, 24 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16202
[pid 16202] <... set_robust_list resumed>) = 0
[pid 16202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16202] setpgid(0, 0)               = 0
[pid 16202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16202] write(3, "1000", 4)         = 4
[pid 16202] close(3)                    = 0
[pid 16202] write(1, "executing program\n", 18executing program
) = 18
[pid 16202] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16202] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16202] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16202] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16202] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16202] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16202] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16203]}, 88) = 16203
[pid 16202] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16203 attached
 <unfinished ...>
[pid 16203] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16203] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16203] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16202] <... futex resumed>)        = 0
[pid 16202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16203] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16202] <... futex resumed>)        = 0
[pid 16202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16203] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16202] <... futex resumed>)        = 0
[pid 16202] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16202] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16203] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16203] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16202] <... futex resumed>)        = 0
[pid 16202] exit_group(0)               = ?
[pid 16203] +++ exited with 0 +++
[pid 16202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16204 attached
 <unfinished ...>
[pid 16204] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16204] setpgid(0, 0)               = 0
[pid 16204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16204] write(3, "1000", 4executing program
)         = 4
[pid 16204] close(3)                    = 0
[pid 16204] write(1, "executing program\n", 18) = 18
[pid 16204] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16204] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16204] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16204] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16204] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16204] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16204] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16205]}, 88) = 16205
[pid 16204] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16205 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16204
[pid 16205] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16205] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16204] <... futex resumed>)        = 0
[pid 16204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16205] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16204] <... futex resumed>)        = 0
[pid 16204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16205] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16204] <... futex resumed>)        = 0
[pid 16204] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16204] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16205] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16205] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16204] <... futex resumed>)        = 0
[pid 16204] exit_group(0)               = ?
[pid 16205] +++ exited with 0 +++
[pid 16204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16206
./strace-static-x86_64: Process 16206 attached
[pid 16206] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16206] setpgid(0, 0)               = 0
[pid 16206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16206] write(3, "1000", 4)         = 4
[pid 16206] close(3)                    = 0
executing program
[pid 16206] write(1, "executing program\n", 18) = 18
[pid 16206] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16206] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16206] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16206] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16206] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16206] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16206] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16207 attached
 => {parent_tid=[16207]}, 88) = 16207
[pid 16206] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16207] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16207] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16207] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16206] <... futex resumed>)        = 0
[pid 16206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16207] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16206] <... futex resumed>)        = 0
[pid 16206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16207] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16206] <... futex resumed>)        = 0
[pid 16206] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16206] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16207] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16207] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16206] <... futex resumed>)        = 0
[pid 16206] exit_group(0)               = ?
[pid 16207] +++ exited with 0 +++
[pid 16206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16208 attached
 <unfinished ...>
[pid 16208] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16208] setpgid(0, 0)               = 0
[pid 16208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16208] write(3, "1000", 4)         = 4
executing program
[pid 16208] close(3)                    = 0
[pid 16208] write(1, "executing program\n", 18) = 18
[pid 16208] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16208] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16208] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16208] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16208] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16208] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16208] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16209]}, 88) = 16209
[pid 16208] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16209 attached
 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16208
[pid 16209] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16209] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16208] <... futex resumed>)        = 0
[pid 16208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16209] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16208] <... futex resumed>)        = 0
[pid 16208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16209] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16208] <... futex resumed>)        = 0
[pid 16208] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16208] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16209] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16209] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16208] <... futex resumed>)        = 0
[pid 16208] exit_group(0)               = ?
[pid 16209] +++ exited with 0 +++
[pid 16208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16210 attached
, child_tidptr=0x55557060c690) = 16210
[pid 16210] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16210] setpgid(0, 0)               = 0
[pid 16210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16210] write(3, "1000", 4)         = 4
[pid 16210] close(3)                    = 0
[pid 16210] write(1, "executing program\n", 18executing program
) = 18
[pid 16210] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16210] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16210] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16210] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16211 attached
 => {parent_tid=[16211]}, 88) = 16211
[pid 16211] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16211] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16210] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16211] <... futex resumed>)        = 0
[pid 16211] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16211] <... futex resumed>)        = 0
[pid 16211] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16211] <... futex resumed>)        = 0
[pid 16211] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16210] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16211] <... futex resumed>)        = 0
[pid 16211] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16210] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16211] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16211] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16211] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16210] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16210] exit_group(0)               = ?
[pid 16211] <... futex resumed>)        = ?
[pid 16211] +++ exited with 0 +++
[pid 16210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16212
./strace-static-x86_64: Process 16212 attached
[pid 16212] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16212] setpgid(0, 0)               = 0
[pid 16212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXECexecuting program
) = 3
[pid 16212] write(3, "1000", 4)         = 4
[pid 16212] close(3)                    = 0
[pid 16212] write(1, "executing program\n", 18) = 18
[pid 16212] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16212] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16212] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16212] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16212] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16212] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16212] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16213]}, 88) = 16213
[pid 16212] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16213 attached
 <unfinished ...>
[pid 16213] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16213] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16213] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16212] <... futex resumed>)        = 0
[pid 16212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16213] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16212] <... futex resumed>)        = 0
[pid 16212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16213] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16212] <... futex resumed>)        = 0
[pid 16212] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16212] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}executing program
 <unfinished ...>
[pid 16213] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16213] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16212] <... futex resumed>)        = 0
[pid 16212] exit_group(0)               = ?
[pid 16213] +++ exited with 0 +++
[pid 16212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16214 attached
 <unfinished ...>
[pid 16214] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16214] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16214
[pid 16214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16214] write(3, "1000", 4)         = 4
[pid 16214] close(3)                    = 0
[pid 16214] write(1, "executing program\n", 18) = 18
[pid 16214] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16214] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16214] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16214] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16214] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16214] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16214] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16215]}, 88) = 16215
./strace-static-x86_64: Process 16215 attached
[pid 16214] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16215] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16215] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16215] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16214] <... futex resumed>)        = 0
[pid 16214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16215] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16214] <... futex resumed>)        = 0
[pid 16214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16215] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16214] <... futex resumed>)        = 0
[pid 16214] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16214] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16215] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16215] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16214] <... futex resumed>)        = 0
[pid 16214] exit_group(0)               = ?
[pid 16215] +++ exited with 0 +++
[pid 16214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16216 attached
 <unfinished ...>
[pid 16216] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16216
[pid 16216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16216] setpgid(0, 0)               = 0
[pid 16216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16216] write(3, "1000", 4)         = 4
executing program
[pid 16216] close(3)                    = 0
[pid 16216] write(1, "executing program\n", 18) = 18
[pid 16216] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16216] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16216] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16216] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16216] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16216] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16216] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16217]}, 88) = 16217
[pid 16216] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16217 attached
 <unfinished ...>
[pid 16217] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16217] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16217] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16216] <... futex resumed>)        = 0
[pid 16216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16217] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16216] <... futex resumed>)        = 0
[pid 16216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16217] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16216] <... futex resumed>)        = 0
[pid 16216] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16216] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16217] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16217] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16216] <... futex resumed>)        = 0
[pid 16216] exit_group(0)               = ?
[pid 16217] +++ exited with 0 +++
[pid 16216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16218 attached
, child_tidptr=0x55557060c690) = 16218
[pid 16218] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16218] setpgid(0, 0)               = 0
[pid 16218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16218] write(3, "1000", 4)         = 4
[pid 16218] close(3)                    = 0
[pid 16218] write(1, "executing program\n", 18executing program
) = 18
[pid 16218] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16218] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16218] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16218] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16218] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16218] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16218] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16219 attached
 => {parent_tid=[16219]}, 88) = 16219
[pid 16219] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16219] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16219] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16219] <... futex resumed>)        = 0
[pid 16219] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16219] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16219] <... futex resumed>)        = 0
[pid 16219] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16219] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16219] <... futex resumed>)        = 0
[pid 16219] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16219] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16218] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16219] <... futex resumed>)        = 0
[pid 16218] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16219] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16219] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16219] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16218] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16218] exit_group(0)               = ?
[pid 16219] <... futex resumed>)        = ?
[pid 16219] +++ exited with 0 +++
[pid 16218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16220 attached
, child_tidptr=0x55557060c690) = 16220
[pid 16220] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16220] setpgid(0, 0)               = 0
[pid 16220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16220] write(3, "1000", 4)         = 4
[pid 16220] close(3executing program
)                    = 0
[pid 16220] write(1, "executing program\n", 18) = 18
[pid 16220] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16220] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16220] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16220] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16220] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16220] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16220] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16221]}, 88) = 16221
[pid 16220] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16221 attached
 <unfinished ...>
[pid 16221] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16221] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16221] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16220] <... futex resumed>)        = 0
[pid 16220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16221] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16220] <... futex resumed>)        = 0
[pid 16220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16221] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16220] <... futex resumed>)        = 0
[pid 16220] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16220] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16221] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16221] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16220] <... futex resumed>)        = 0
[pid 16220] exit_group(0)               = ?
[pid 16221] +++ exited with 0 +++
[pid 16220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16222 attached
 <unfinished ...>
[pid 16222] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16222] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16222
[pid 16222] <... setpgid resumed>)      = 0
[pid 16222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16222] write(3, "1000", 4)         = 4
[pid 16222] close(3)                    = 0
[pid 16222] write(1, "executing program\n", 18executing program
) = 18
[pid 16222] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16222] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16222] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16222] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16222] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16222] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16222] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16223 attached
 => {parent_tid=[16223]}, 88) = 16223
[pid 16223] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16223] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16223] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16222] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16223] <... futex resumed>)        = 0
[pid 16223] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16223] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16223] <... futex resumed>)        = 0
[pid 16223] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16223] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16223] <... futex resumed>)        = 0
[pid 16222] <... futex resumed>)        = 1
[pid 16223] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16223] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16222] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16223] <... futex resumed>)        = 0
[pid 16223] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16222] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16223] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16223] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16223] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16222] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16222] exit_group(0)               = ?
[pid 16223] <... futex resumed>)        = ?
[pid 16223] +++ exited with 0 +++
[pid 16222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16224
./strace-static-x86_64: Process 16224 attached
[pid 16224] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16224] setpgid(0, 0)               = 0
[pid 16224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16224] write(3, "1000", 4)         = 4
[pid 16224] close(3)                    = 0
[pid 16224] write(1, "executing program\n", 18executing program
) = 18
[pid 16224] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16224] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16224] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16224] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16224] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16224] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16224] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16225 attached
 <unfinished ...>
[pid 16225] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16224] <... clone3 resumed> => {parent_tid=[16225]}, 88) = 16225
[pid 16224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16225] <... futex resumed>)        = 0
[pid 16224] <... futex resumed>)        = 1
[pid 16225] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16225] <... futex resumed>)        = 0
[pid 16225] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16225] <... futex resumed>)        = 0
[pid 16225] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16224] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16225] <... futex resumed>)        = 0
[pid 16225] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16224] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16225] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16225] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16225] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16224] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16224] exit_group(0)               = ?
[pid 16225] <... futex resumed>)        = ?
[pid 16225] +++ exited with 0 +++
[pid 16224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16226
./strace-static-x86_64: Process 16226 attached
[pid 16226] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16226] setpgid(0, 0)               = 0
[pid 16226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16226] write(3, "1000", 4)         = 4
[pid 16226] close(3)                    = 0
[pid 16226] write(1, "executing program\n", 18executing program
) = 18
[pid 16226] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16226] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16226] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16226] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16226] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16226] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16226] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16227]}, 88) = 16227
[pid 16226] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16227 attached
 <unfinished ...>
[pid 16227] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16227] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16227] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16226] <... futex resumed>)        = 0
[pid 16226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16227] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16226] <... futex resumed>)        = 0
[pid 16226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16227] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16226] <... futex resumed>)        = 0
[pid 16226] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16226] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16227] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16227] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16226] <... futex resumed>)        = 0
[pid 16226] exit_group(0)               = ?
[pid 16227] +++ exited with 0 +++
[pid 16226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16228
./strace-static-x86_64: Process 16228 attached
[pid 16228] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16228] setpgid(0, 0)               = 0
[pid 16228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16228] write(3, "1000", 4executing program
)         = 4
[pid 16228] close(3)                    = 0
[pid 16228] write(1, "executing program\n", 18) = 18
[pid 16228] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16228] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16228] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16228] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16228] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16228] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16228] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16229 attached
 => {parent_tid=[16229]}, 88) = 16229
[pid 16229] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16229] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16229] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16228] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16229] <... futex resumed>)        = 0
[pid 16228] <... futex resumed>)        = 1
[pid 16229] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16229] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16229] <... futex resumed>)        = 0
[pid 16229] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16229] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16228] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16229] <... futex resumed>)        = 0
[pid 16229] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16229] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16228] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16229] <... futex resumed>)        = 0
[pid 16229] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16229] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16229] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16228] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16228] exit_group(0)               = ?
[pid 16229] <... futex resumed>)        = ?
[pid 16229] +++ exited with 0 +++
[pid 16228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16230
./strace-static-x86_64: Process 16230 attached
[pid 16230] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16230] setpgid(0, 0)               = 0
[pid 16230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16230] write(3, "1000", 4)         = 4
[pid 16230] close(3)                    = 0
executing program
[pid 16230] write(1, "executing program\n", 18) = 18
[pid 16230] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16230] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16230] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16230] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16230] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16230] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16230] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16231 attached
 <unfinished ...>
[pid 16231] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16231] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16231] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16230] <... clone3 resumed> => {parent_tid=[16231]}, 88) = 16231
[pid 16230] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16231] <... futex resumed>)        = 0
[pid 16230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16231] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16231] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16230] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16231] <... futex resumed>)        = 0
[pid 16230] <... futex resumed>)        = 1
[pid 16231] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16231] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16230] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16231] <... futex resumed>)        = 0
[pid 16230] <... futex resumed>)        = 1
[pid 16231] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16231] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16230] <... futex resumed>)        = 0
[pid 16230] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16230] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16231] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16231] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16230] <... futex resumed>)        = 0
[pid 16230] exit_group(0)               = ?
[pid 16231] +++ exited with 0 +++
[pid 16230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16232
./strace-static-x86_64: Process 16232 attached
[pid 16232] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16232] setpgid(0, 0)               = 0
[pid 16232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16232] write(3, "1000", 4)         = 4
[pid 16232] close(3)                    = 0
[pid 16232] write(1, "executing program\n", 18executing program
) = 18
[pid 16232] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16232] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16232] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16232] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16232] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16232] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16232] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16233 attached
 <unfinished ...>
[pid 16233] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16233] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16233] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16232] <... clone3 resumed> => {parent_tid=[16233]}, 88) = 16233
[pid 16232] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16233] <... futex resumed>)        = 0
[pid 16233] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16233] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16233] <... futex resumed>)        = 0
[pid 16232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16233] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16232] <... futex resumed>)        = 0
[pid 16233] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16233] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16232] <... futex resumed>)        = 0
[pid 16232] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16232] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16233] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16233] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16232] <... futex resumed>)        = 0
[pid 16233] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16232] exit_group(0)               = ?
[pid 16233] <... futex resumed>)        = ?
[pid 16233] +++ exited with 0 +++
[pid 16232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16234 attached
, child_tidptr=0x55557060c690) = 16234
[pid 16234] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16234] setpgid(0, 0)               = 0
[pid 16234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16234] write(3, "1000", 4)         = 4
[pid 16234] close(3executing program
)                    = 0
[pid 16234] write(1, "executing program\n", 18) = 18
[pid 16234] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16234] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16234] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16234] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16234] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16234] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16234] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16235 attached
 <unfinished ...>
[pid 16235] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16235] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16234] <... clone3 resumed> => {parent_tid=[16235]}, 88) = 16235
[pid 16234] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16235] <... futex resumed>)        = 0
[pid 16235] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16235] <... futex resumed>)        = 0
[pid 16234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16235] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16234] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16235] <... futex resumed>)        = 0
[pid 16235] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16234] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16235] <... futex resumed>)        = 0
[pid 16234] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16235] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16235] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16235] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16234] <... futex resumed>)        = 0
[pid 16234] exit_group(0)               = ?
[pid 16235] <... futex resumed>)        = ?
[pid 16235] +++ exited with 0 +++
[pid 16234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16236 attached
, child_tidptr=0x55557060c690) = 16236
[pid 16236] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16236] setpgid(0, 0)               = 0
[pid 16236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16236] write(3, "1000", 4)         = 4
[pid 16236] close(3)                    = 0
[pid 16236] write(1, "executing program\n", 18executing program
) = 18
[pid 16236] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16236] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16236] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16236] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16236] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16236] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16236] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16237 attached
 <unfinished ...>
[pid 16237] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16237] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16237] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16236] <... clone3 resumed> => {parent_tid=[16237]}, 88) = 16237
[pid 16236] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16237] <... futex resumed>)        = 0
[pid 16236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16237] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16237] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16236] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16237] <... futex resumed>)        = 0
[pid 16237] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16237] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16237] <... futex resumed>)        = 0
[pid 16237] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16237] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16236] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16237] <... futex resumed>)        = 0
[pid 16236] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16237] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16237] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16237] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16236] <... futex resumed>)        = 0
[pid 16236] exit_group(0)               = ?
[pid 16237] <... futex resumed>)        = ?
[pid 16237] +++ exited with 0 +++
[pid 16236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16238 attached
, child_tidptr=0x55557060c690) = 16238
[pid 16238] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16238] setpgid(0, 0)               = 0
[pid 16238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16238] write(3, "1000", 4)         = 4
[pid 16238] close(3)                    = 0
executing program
[pid 16238] write(1, "executing program\n", 18) = 18
[pid 16238] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16238] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16238] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16238] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16238] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16238] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16238] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16239 attached
 <unfinished ...>
[pid 16239] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16238] <... clone3 resumed> => {parent_tid=[16239]}, 88) = 16239
[pid 16238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16239] <... futex resumed>)        = 0
[pid 16239] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16239] <... futex resumed>)        = 0
[pid 16238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16239] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16238] <... futex resumed>)        = 0
[pid 16239] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16239] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16238] <... futex resumed>)        = 0
[pid 16238] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16238] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16239] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16239] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16238] <... futex resumed>)        = 0
[pid 16239] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16238] exit_group(0)               = ?
[pid 16239] <... futex resumed>)        = ?
[pid 16239] +++ exited with 0 +++
[pid 16238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16240 attached
, child_tidptr=0x55557060c690) = 16240
[pid 16240] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16240] setpgid(0, 0)               = 0
[pid 16240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16240] write(3, "1000", 4executing program
)         = 4
[pid 16240] close(3)                    = 0
[pid 16240] write(1, "executing program\n", 18) = 18
[pid 16240] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16240] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16240] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16240] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16240] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16240] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16240] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16241]}, 88) = 16241
[pid 16240] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16241 attached
 <unfinished ...>
[pid 16241] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16241] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16241] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16240] <... futex resumed>)        = 0
[pid 16240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16241] <... futex resumed>)        = 1
[pid 16241] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16240] <... futex resumed>)        = 0
[pid 16240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16241] <... futex resumed>)        = 1
[pid 16241] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16240] <... futex resumed>)        = 0
[pid 16240] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16240] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16241] <... futex resumed>)        = 1
[pid 16241] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16241] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16240] <... futex resumed>)        = 0
[pid 16240] exit_group(0)               = ?
[pid 16241] <... futex resumed>)        = ?
[pid 16241] +++ exited with 0 +++
[pid 16240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16242 attached
, child_tidptr=0x55557060c690) = 16242
[pid 16242] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16242] setpgid(0, 0)               = 0
[pid 16242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16242] write(3, "1000", 4)         = 4
[pid 16242] close(3)                    = 0
[pid 16242] write(1, "executing program\n", 18executing program
) = 18
[pid 16242] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16242] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16242] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16242] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16242] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16242] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16242] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16243]}, 88) = 16243
[pid 16242] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16243 attached
 <unfinished ...>
[pid 16243] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16243] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16243] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16242] <... futex resumed>)        = 0
[pid 16242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16243] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16242] <... futex resumed>)        = 0
[pid 16242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16243] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16242] <... futex resumed>)        = 0
[pid 16242] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16242] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16243] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16243] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16242] <... futex resumed>)        = 0
[pid 16242] exit_group(0)               = ?
[pid 16243] +++ exited with 0 +++
[pid 16242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16244 attached
, child_tidptr=0x55557060c690) = 16244
[pid 16244] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16244] setpgid(0, 0)               = 0
[pid 16244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16244] write(3, "1000", 4)         = 4
[pid 16244] close(3)                    = 0
[pid 16244] write(1, "executing program\n", 18executing program
) = 18
[pid 16244] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16244] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16244] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16244] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16244] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16244] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16244] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16245 attached
 => {parent_tid=[16245]}, 88) = 16245
[pid 16245] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16245] <... futex resumed>)        = 0
[pid 16245] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16245] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16244] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16245] <... futex resumed>)        = 0
[pid 16245] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16245] <... futex resumed>)        = 0
[pid 16245] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16244] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16245] <... futex resumed>)        = 0
[pid 16244] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16245] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16245] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16245] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16244] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16244] exit_group(0)               = ?
[pid 16245] <... futex resumed>)        = ?
[pid 16245] +++ exited with 0 +++
[pid 16244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16246 attached
, child_tidptr=0x55557060c690) = 16246
[pid 16246] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16246] setpgid(0, 0)               = 0
[pid 16246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16246] write(3, "1000", 4)         = 4
[pid 16246] close(3)                    = 0
[pid 16246] write(1, "executing program\n", 18executing program
) = 18
[pid 16246] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16246] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16246] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16246] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16246] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16246] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16246] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16247 attached
 <unfinished ...>
[pid 16247] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16247] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16246] <... clone3 resumed> => {parent_tid=[16247]}, 88) = 16247
[pid 16246] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16247] <... futex resumed>)        = 0
[pid 16247] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16247] <... futex resumed>)        = 0
[pid 16247] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16247] <... futex resumed>)        = 0
[pid 16246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16247] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16246] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16246] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16247] <... futex resumed>)        = 0
[pid 16247] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16246] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16247] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16247] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16247] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16246] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16246] exit_group(0)               = ?
[pid 16247] <... futex resumed>)        = ?
[pid 16247] +++ exited with 0 +++
[pid 16246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16248
./strace-static-x86_64: Process 16248 attached
[pid 16248] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16248] setpgid(0, 0)               = 0
[pid 16248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16248] write(3, "1000", 4)         = 4
[pid 16248] close(3)                    = 0
executing program
[pid 16248] write(1, "executing program\n", 18) = 18
[pid 16248] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16248] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16248] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16248] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16248] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16248] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16248] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16249 attached
 <unfinished ...>
[pid 16249] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16249] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16248] <... clone3 resumed> => {parent_tid=[16249]}, 88) = 16249
[pid 16248] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16249] <... futex resumed>)        = 0
[pid 16248] <... futex resumed>)        = 1
[pid 16249] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16249] <... futex resumed>)        = 0
[pid 16248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16249] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16248] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16249] <... futex resumed>)        = 0
[pid 16248] <... futex resumed>)        = 1
[pid 16249] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16248] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16249] <... futex resumed>)        = 0
[pid 16248] <... futex resumed>)        = 1
[pid 16248] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16249] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16249] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16248] <... futex resumed>)        = 0
[pid 16249] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16248] exit_group(0)               = ?
[pid 16249] <... futex resumed>)        = ?
[pid 16249] +++ exited with 0 +++
[pid 16248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16250
./strace-static-x86_64: Process 16250 attached
[pid 16250] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16250] setpgid(0, 0)               = 0
[pid 16250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16250] write(3, "1000", 4)         = 4
[pid 16250] close(3)                    = 0
[pid 16250] write(1, "executing program\n", 18executing program
) = 18
[pid 16250] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16250] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16250] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16250] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16250] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16250] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16250] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16251]}, 88) = 16251
[pid 16250] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 16251 attached
[pid 16251] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16251] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16251] <... futex resumed>)        = 0
[pid 16250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16251] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16251] <... futex resumed>)        = 0
[pid 16251] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16251] <... futex resumed>)        = 0
[pid 16250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16251] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16250] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16250] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16251] <... futex resumed>)        = 0
[pid 16251] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16251] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16251] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16250] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16250] exit_group(0)               = ?
[pid 16251] <... futex resumed>)        = ?
[pid 16251] +++ exited with 0 +++
[pid 16250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16252
./strace-static-x86_64: Process 16252 attached
[pid 16252] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16252] setpgid(0, 0)               = 0
[pid 16252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16252] write(3, "1000", 4)         = 4
[pid 16252] close(3executing program
)                    = 0
[pid 16252] write(1, "executing program\n", 18) = 18
[pid 16252] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16252] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16252] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16252] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16252] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16252] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16252] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16253 attached
 <unfinished ...>
[pid 16253] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16253] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16252] <... clone3 resumed> => {parent_tid=[16253]}, 88) = 16253
[pid 16252] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16253] <... futex resumed>)        = 0
[pid 16252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16253] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16252] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16253] <... futex resumed>)        = 0
[pid 16253] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16253] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16252] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16253] <... futex resumed>)        = 0
[pid 16253] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16252] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16253] <... futex resumed>)        = 0
[pid 16252] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16253] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16253] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16252] <... futex resumed>)        = 0
[pid 16253] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16252] exit_group(0)               = ?
[pid 16253] <... futex resumed>)        = ?
[pid 16253] +++ exited with 0 +++
[pid 16252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16254
./strace-static-x86_64: Process 16254 attached
[pid 16254] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16254] setpgid(0, 0)               = 0
[pid 16254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16254] write(3, "1000", 4)         = 4
[pid 16254] close(3)                    = 0
executing program
[pid 16254] write(1, "executing program\n", 18) = 18
[pid 16254] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16254] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16254] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16254] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16254] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16254] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16254] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16255 attached
 <unfinished ...>
[pid 16255] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16255] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16254] <... clone3 resumed> => {parent_tid=[16255]}, 88) = 16255
[pid 16254] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16255] <... futex resumed>)        = 0
[pid 16255] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16255] <... futex resumed>)        = 0
[pid 16254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16255] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16254] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16255] <... futex resumed>)        = 0
[pid 16254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16255] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16254] <... futex resumed>)        = 0
[pid 16255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16254] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16255] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16254] <... futex resumed>)        = 0
[pid 16254] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16255] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16255] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16254] <... futex resumed>)        = 0
[pid 16255] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16254] exit_group(0)               = ?
[pid 16255] <... futex resumed>)        = ?
[pid 16255] +++ exited with 0 +++
[pid 16254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16256 attached
, child_tidptr=0x55557060c690) = 16256
[pid 16256] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16256] setpgid(0, 0)               = 0
[pid 16256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16256] write(3, "1000", 4)         = 4
[pid 16256] close(3)                    = 0
executing program
[pid 16256] write(1, "executing program\n", 18) = 18
[pid 16256] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16256] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16256] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16256] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16256] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16256] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16256] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16257 attached
 <unfinished ...>
[pid 16257] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16256] <... clone3 resumed> => {parent_tid=[16257]}, 88) = 16257
[pid 16257] <... set_robust_list resumed>) = 0
[pid 16257] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16256] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16256] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16257] <... futex resumed>)        = 0
[pid 16256] <... futex resumed>)        = 1
[pid 16257] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16257] <... futex resumed>)        = 0
[pid 16256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16257] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16256] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16257] <... futex resumed>)        = 0
[pid 16256] <... futex resumed>)        = 1
[pid 16257] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16257] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16256] <... futex resumed>)        = 0
[pid 16256] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16256] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16257] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16257] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16256] <... futex resumed>)        = 0
[pid 16257] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16256] exit_group(0)               = ?
[pid 16257] <... futex resumed>)        = ?
[pid 16257] +++ exited with 0 +++
[pid 16256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16258
./strace-static-x86_64: Process 16258 attached
[pid 16258] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16258] setpgid(0, 0)               = 0
[pid 16258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16258] write(3, "1000", 4)         = 4
[pid 16258] close(3)                    = 0
[pid 16258] write(1, "executing program\n", 18executing program
) = 18
[pid 16258] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16258] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16258] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16258] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16258] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16258] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16258] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16259 attached
 => {parent_tid=[16259]}, 88) = 16259
[pid 16259] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16259] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16258] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16259] <... futex resumed>)        = 0
[pid 16258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16259] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16259] <... futex resumed>)        = 0
[pid 16258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16259] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16258] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16259] <... futex resumed>)        = 0
[pid 16259] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16258] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16259] <... futex resumed>)        = 0
[pid 16259] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16259] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16259] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16258] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16258] exit_group(0)               = ?
[pid 16259] <... futex resumed>)        = ?
[pid 16259] +++ exited with 0 +++
[pid 16258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16260
./strace-static-x86_64: Process 16260 attached
[pid 16260] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16260] setpgid(0, 0)               = 0
[pid 16260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16260] write(3, "1000", 4)         = 4
[pid 16260] close(3executing program
)                    = 0
[pid 16260] write(1, "executing program\n", 18) = 18
[pid 16260] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16260] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16260] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16260] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16260] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16260] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16260] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16261 attached
 <unfinished ...>
[pid 16261] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16261] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16260] <... clone3 resumed> => {parent_tid=[16261]}, 88) = 16261
[pid 16260] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16261] <... futex resumed>)        = 0
[pid 16260] <... futex resumed>)        = 1
[pid 16261] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16261] <... futex resumed>)        = 0
[pid 16260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16261] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16261] <... futex resumed>)        = 0
[pid 16260] <... futex resumed>)        = 1
[pid 16261] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16260] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16261] <... futex resumed>)        = 0
[pid 16260] <... futex resumed>)        = 1
[pid 16260] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16261] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16261] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16260] <... futex resumed>)        = 0
[pid 16261] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16260] exit_group(0)               = ?
[pid 16261] <... futex resumed>)        = ?
[pid 16261] +++ exited with 0 +++
[pid 16260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16262
./strace-static-x86_64: Process 16262 attached
[pid 16262] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16262] setpgid(0, 0)               = 0
[pid 16262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16262] write(3, "1000", 4)         = 4
[pid 16262] close(3)                    = 0
executing program
[pid 16262] write(1, "executing program\n", 18) = 18
[pid 16262] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16262] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16262] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16262] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16262] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16262] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16262] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16263 attached
 <unfinished ...>
[pid 16263] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16263] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16263] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16262] <... clone3 resumed> => {parent_tid=[16263]}, 88) = 16263
[pid 16262] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16263] <... futex resumed>)        = 0
[pid 16262] <... futex resumed>)        = 1
[pid 16263] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16263] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16263] <... futex resumed>)        = 0
[pid 16262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16263] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16263] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16262] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16263] <... futex resumed>)        = 0
[pid 16263] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16263] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16262] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16263] <... futex resumed>)        = 0
[pid 16262] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16263] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16263] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16263] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16262] <... futex resumed>)        = 0
[pid 16262] exit_group(0)               = ?
[pid 16263] <... futex resumed>)        = ?
[pid 16263] +++ exited with 0 +++
[pid 16262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16264 attached
, child_tidptr=0x55557060c690) = 16264
[pid 16264] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16264] setpgid(0, 0)               = 0
[pid 16264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16264] write(3, "1000", 4)         = 4
[pid 16264] close(3)                    = 0
[pid 16264] write(1, "executing program\n", 18executing program
) = 18
[pid 16264] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16264] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16264] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16264] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16264] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16264] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16264] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16265 attached
 => {parent_tid=[16265]}, 88) = 16265
[pid 16265] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16265] <... futex resumed>)        = 0
[pid 16264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16265] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16264] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16265] <... futex resumed>)        = 0
[pid 16265] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16264] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16265] <... futex resumed>)        = 0
[pid 16265] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16264] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16265] <... futex resumed>)        = 0
[pid 16264] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16265] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16265] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16265] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16264] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16264] exit_group(0)               = ?
[pid 16265] <... futex resumed>)        = ?
[pid 16265] +++ exited with 0 +++
[pid 16264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16266
./strace-static-x86_64: Process 16266 attached
[pid 16266] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16266] setpgid(0, 0)               = 0
[pid 16266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16266] write(3, "1000", 4)         = 4
[pid 16266] close(3executing program
)                    = 0
[pid 16266] write(1, "executing program\n", 18) = 18
[pid 16266] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16266] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16266] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16266] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16266] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16266] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16266] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16267 attached
 <unfinished ...>
[pid 16267] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16267] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16267] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16266] <... clone3 resumed> => {parent_tid=[16267]}, 88) = 16267
[pid 16266] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16267] <... futex resumed>)        = 0
[pid 16267] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16267] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16267] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16266] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16267] <... futex resumed>)        = 0
[pid 16267] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16267] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16267] <... futex resumed>)        = 0
[pid 16266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16267] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16266] <... futex resumed>)        = 0
[pid 16266] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16266] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16267] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16267] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16266] <... futex resumed>)        = 0
[pid 16267] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16266] exit_group(0)               = ?
[pid 16267] <... futex resumed>)        = ?
[pid 16267] +++ exited with 0 +++
[pid 16266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16268 attached
, child_tidptr=0x55557060c690) = 16268
[pid 16268] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16268] setpgid(0, 0)               = 0
[pid 16268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16268] write(3, "1000", 4)         = 4
[pid 16268] close(3)                    = 0
executing program
[pid 16268] write(1, "executing program\n", 18) = 18
[pid 16268] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16268] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16268] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16268] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16268] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16268] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16268] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16269 attached
 <unfinished ...>
[pid 16269] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16269] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16268] <... clone3 resumed> => {parent_tid=[16269]}, 88) = 16269
[pid 16268] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16269] <... futex resumed>)        = 0
[pid 16269] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16269] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16269] <... futex resumed>)        = 0
[pid 16269] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16269] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16268] <... futex resumed>)        = 0
[pid 16269] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16269] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16268] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16269] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16268] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16268] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16269] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16269] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16268] <... futex resumed>)        = 0
[pid 16269] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16268] exit_group(0)               = ?
[pid 16269] <... futex resumed>)        = ?
[pid 16269] +++ exited with 0 +++
[pid 16268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16270 attached
, child_tidptr=0x55557060c690) = 16270
[pid 16270] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16270] setpgid(0, 0)               = 0
[pid 16270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16270] write(3, "1000", 4)         = 4
[pid 16270] close(3)                    = 0
[pid 16270] write(1, "executing program\n", 18executing program
) = 18
[pid 16270] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16270] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16270] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16270] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16270] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16270] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16270] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16271]}, 88) = 16271
[pid 16270] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16271 attached
 <unfinished ...>
[pid 16271] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16271] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16271] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16270] <... futex resumed>)        = 0
[pid 16270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16271] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16270] <... futex resumed>)        = 0
[pid 16270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16271] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16270] <... futex resumed>)        = 0
[pid 16270] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16270] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16271] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16271] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16270] <... futex resumed>)        = 0
[pid 16270] exit_group(0)               = ?
[pid 16271] +++ exited with 0 +++
[pid 16270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16272 attached
 <unfinished ...>
[pid 16272] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16272
[pid 16272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16272] setpgid(0, 0)               = 0
[pid 16272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16272] write(3, "1000", 4)         = 4
[pid 16272] close(3)                    = 0
[pid 16272] write(1, "executing program\n", 18executing program
) = 18
[pid 16272] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16272] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16272] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16272] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16272] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16272] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16272] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16273]}, 88) = 16273
[pid 16272] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16273 attached
 <unfinished ...>
[pid 16273] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16273] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16273] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16272] <... futex resumed>)        = 0
[pid 16272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16273] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16272] <... futex resumed>)        = 0
[pid 16272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16273] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16272] <... futex resumed>)        = 0
[pid 16272] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16272] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16273] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16273] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16272] <... futex resumed>)        = 0
[pid 16272] exit_group(0)               = ?
[pid 16273] +++ exited with 0 +++
[pid 16272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16274 attached
 <unfinished ...>
[pid 16274] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16274
[pid 16274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16274] setpgid(0, 0)               = 0
[pid 16274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16274] write(3, "1000", 4)         = 4
[pid 16274] close(3)                    = 0
[pid 16274] write(1, "executing program\n", 18executing program
) = 18
[pid 16274] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16274] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16274] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16274] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16274] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16274] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16274] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16275]}, 88) = 16275
[pid 16274] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16275 attached
 <unfinished ...>
[pid 16275] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16275] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16275] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16274] <... futex resumed>)        = 0
[pid 16274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16275] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16274] <... futex resumed>)        = 0
[pid 16274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16275] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16274] <... futex resumed>)        = 0
[pid 16274] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16274] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16275] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16275] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16274] <... futex resumed>)        = 0
[pid 16274] exit_group(0)               = ?
[pid 16275] +++ exited with 0 +++
[pid 16274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16276 attached
 <unfinished ...>
[pid 16276] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16276
[pid 16276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16276] setpgid(0, 0)               = 0
[pid 16276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16276] write(3, "1000", 4)         = 4
[pid 16276] close(3)                    = 0
[pid 16276] write(1, "executing program\n", 18executing program
) = 18
[pid 16276] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16276] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16276] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16276] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16276] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16276] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16276] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16277]}, 88) = 16277
[pid 16276] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16277 attached
 <unfinished ...>
[pid 16277] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16277] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16277] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16276] <... futex resumed>)        = 0
[pid 16276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16277] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16276] <... futex resumed>)        = 0
[pid 16276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16277] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16276] <... futex resumed>)        = 0
[pid 16276] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16276] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16277] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16277] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16276] <... futex resumed>)        = 0
[pid 16276] exit_group(0)               = ?
[pid 16277] +++ exited with 0 +++
[pid 16276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16278 attached
 <unfinished ...>
[pid 16278] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16278
[pid 16278] setpgid(0, 0)               = 0
[pid 16278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16278] write(3, "1000", 4)         = 4
[pid 16278] close(3)                    = 0
[pid 16278] write(1, "executing program\n", 18executing program
) = 18
[pid 16278] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16278] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16278] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16278] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16278] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16278] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16278] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16279 attached
 => {parent_tid=[16279]}, 88) = 16279
[pid 16279] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16279] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16279] <... futex resumed>)        = 0
[pid 16279] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16279] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16279] <... futex resumed>)        = 0
[pid 16279] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16279] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16279] <... futex resumed>)        = 0
[pid 16279] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16279] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16278] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16279] <... futex resumed>)        = 0
[pid 16279] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16279] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16279] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16278] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16278] exit_group(0)               = ?
[pid 16279] <... futex resumed>)        = ?
[pid 16279] +++ exited with 0 +++
[pid 16278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16280
./strace-static-x86_64: Process 16280 attached
[pid 16280] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16280] setpgid(0, 0)               = 0
[pid 16280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16280] write(3, "1000", 4)         = 4
[pid 16280] close(3)                    = 0
[pid 16280] write(1, "executing program\n", 18executing program
) = 18
[pid 16280] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16280] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16280] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16280] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16280] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16280] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16280] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16281]}, 88) = 16281
./strace-static-x86_64: Process 16281 attached
[pid 16280] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16281] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16281] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16281] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16280] <... futex resumed>)        = 0
[pid 16280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16281] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16280] <... futex resumed>)        = 0
[pid 16280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16281] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16280] <... futex resumed>)        = 0
[pid 16280] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16280] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16281] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16281] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16280] <... futex resumed>)        = 0
[pid 16280] exit_group(0)               = ?
[pid 16281] +++ exited with 0 +++
[pid 16280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16282 attached
, child_tidptr=0x55557060c690) = 16282
[pid 16282] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16282] setpgid(0, 0)               = 0
[pid 16282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16282] write(3, "1000", 4)         = 4
[pid 16282] close(3)                    = 0
executing program
[pid 16282] write(1, "executing program\n", 18) = 18
[pid 16282] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16282] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16282] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16282] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16282] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16282] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16282] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16283 attached
 => {parent_tid=[16283]}, 88) = 16283
[pid 16283] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16283] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16282] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16283] <... futex resumed>)        = 0
[pid 16283] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16283] <... futex resumed>)        = 0
[pid 16283] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16283] <... futex resumed>)        = 0
[pid 16283] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16282] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16283] <... futex resumed>)        = 0
[pid 16283] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16283] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16283] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16282] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16282] exit_group(0)               = ?
[pid 16283] <... futex resumed>)        = ?
[pid 16283] +++ exited with 0 +++
[pid 16282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16284
./strace-static-x86_64: Process 16284 attached
[pid 16284] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16284] setpgid(0, 0)               = 0
[pid 16284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16284] write(3, "1000", 4)         = 4
[pid 16284] close(3)                    = 0
executing program
[pid 16284] write(1, "executing program\n", 18) = 18
[pid 16284] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16284] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16284] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16284] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16284] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16284] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16284] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16285 attached
 => {parent_tid=[16285]}, 88) = 16285
[pid 16285] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16285] <... futex resumed>)        = 0
[pid 16284] <... futex resumed>)        = 1
[pid 16285] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16285] <... futex resumed>)        = 0
[pid 16284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16285] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16285] <... futex resumed>)        = 0
[pid 16284] <... futex resumed>)        = 1
[pid 16285] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16285] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16284] <... futex resumed>)        = 0
[pid 16285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16284] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16285] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16284] <... futex resumed>)        = 0
[pid 16284] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16285] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16285] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16284] <... futex resumed>)        = 0
[pid 16285] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16284] exit_group(0)               = ?
[pid 16285] <... futex resumed>)        = ?
[pid 16285] +++ exited with 0 +++
[pid 16284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16286
./strace-static-x86_64: Process 16286 attached
[pid 16286] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16286] setpgid(0, 0)               = 0
[pid 16286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16286] write(3, "1000", 4)         = 4
[pid 16286] close(3)                    = 0
[pid 16286] write(1, "executing program\n", 18executing program
) = 18
[pid 16286] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16286] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16286] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16286] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16286] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16286] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16286] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16287 attached
 <unfinished ...>
[pid 16287] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16287] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16286] <... clone3 resumed> => {parent_tid=[16287]}, 88) = 16287
[pid 16286] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16287] <... futex resumed>)        = 0
[pid 16287] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16287] <... futex resumed>)        = 0
[pid 16286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16287] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16287] <... futex resumed>)        = 0
[pid 16286] <... futex resumed>)        = 1
[pid 16287] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16286] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16287] <... futex resumed>)        = 0
[pid 16286] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16287] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16287] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16287] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16286] exit_group(0)               = ?
[pid 16287] <... futex resumed>)        = ?
[pid 16287] +++ exited with 0 +++
[pid 16286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16288
./strace-static-x86_64: Process 16288 attached
[pid 16288] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16288] setpgid(0, 0)               = 0
[pid 16288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16288] write(3, "1000", 4)         = 4
[pid 16288] close(3)                    = 0
executing program
[pid 16288] write(1, "executing program\n", 18) = 18
[pid 16288] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16288] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16288] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16288] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16288] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16288] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16288] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16289 attached
 <unfinished ...>
[pid 16289] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16289] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16288] <... clone3 resumed> => {parent_tid=[16289]}, 88) = 16289
[pid 16288] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16289] <... futex resumed>)        = 0
[pid 16288] <... futex resumed>)        = 1
[pid 16289] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16289] <... futex resumed>)        = 0
[pid 16289] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16288] <... futex resumed>)        = 1
[pid 16289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16289] <... futex resumed>)        = 0
[pid 16288] <... futex resumed>)        = 1
[pid 16289] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16288] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16289] <... futex resumed>)        = 0
[pid 16288] <... futex resumed>)        = 1
[pid 16288] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16289] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16289] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16288] <... futex resumed>)        = 0
[pid 16289] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16288] exit_group(0)               = ?
[pid 16289] <... futex resumed>)        = ?
[pid 16289] +++ exited with 0 +++
[pid 16288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16290 attached
, child_tidptr=0x55557060c690) = 16290
[pid 16290] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16290] setpgid(0, 0)               = 0
[pid 16290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16290] write(3, "1000", 4)         = 4
[pid 16290] close(3)                    = 0
[pid 16290] write(1, "executing program\n", 18executing program
) = 18
[pid 16290] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16290] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16290] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16290] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16290] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16290] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16290] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16291]}, 88) = 16291
[pid 16290] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16291 attached
 <unfinished ...>
[pid 16291] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16291] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16291] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16290] <... futex resumed>)        = 0
[pid 16290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16291] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16290] <... futex resumed>)        = 0
[pid 16290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16291] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16290] <... futex resumed>)        = 0
[pid 16290] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16290] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16291] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16291] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16290] <... futex resumed>)        = 0
[pid 16291] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16290] exit_group(0)               = ?
[pid 16291] <... futex resumed>)        = ?
[pid 16291] +++ exited with 0 +++
[pid 16290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16292 attached
, child_tidptr=0x55557060c690) = 16292
[pid 16292] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16292] setpgid(0, 0)               = 0
[pid 16292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16292] write(3, "1000", 4)         = 4
[pid 16292] close(3)                    = 0
[pid 16292] write(1, "executing program\n", 18executing program
) = 18
[pid 16292] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16292] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16292] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16292] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16292] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16292] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16292] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16293 attached
 => {parent_tid=[16293]}, 88) = 16293
[pid 16293] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16293] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16293] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16292] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16293] <... futex resumed>)        = 0
[pid 16293] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16293] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16293] <... futex resumed>)        = 0
[pid 16293] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16293] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16293] <... futex resumed>)        = 0
[pid 16292] <... futex resumed>)        = 1
[pid 16293] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16293] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16292] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16293] <... futex resumed>)        = 0
[pid 16293] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16292] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16293] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16293] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16293] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16292] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16292] exit_group(0)               = ?
[pid 16293] <... futex resumed>)        = ?
[pid 16293] +++ exited with 0 +++
[pid 16292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16294 attached
 <unfinished ...>
[pid 16294] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16294] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16294
[pid 16294] <... prctl resumed>)        = 0
[pid 16294] setpgid(0, 0)               = 0
[pid 16294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16294] write(3, "1000", 4)         = 4
[pid 16294] close(3)                    = 0
[pid 16294] write(1, "executing program\n", 18executing program
) = 18
[pid 16294] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16294] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16294] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16294] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16294] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16294] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16294] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16295]}, 88) = 16295
[pid 16294] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16295 attached
 <unfinished ...>
[pid 16295] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16295] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16295] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16294] <... futex resumed>)        = 0
[pid 16294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16295] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16294] <... futex resumed>)        = 0
[pid 16294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16295] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16294] <... futex resumed>)        = 0
[pid 16294] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16294] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16295] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16295] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16294] <... futex resumed>)        = 0
[pid 16294] exit_group(0)               = ?
[pid 16295] +++ exited with 0 +++
[pid 16294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16296 attached
, child_tidptr=0x55557060c690) = 16296
[pid 16296] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16296] setpgid(0, 0)               = 0
[pid 16296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16296] write(3, "1000", 4)         = 4
[pid 16296] close(3executing program
)                    = 0
[pid 16296] write(1, "executing program\n", 18) = 18
[pid 16296] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16296] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16296] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16296] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16296] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16296] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16296] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16297 attached
 => {parent_tid=[16297]}, 88) = 16297
[pid 16297] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16297] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16297] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16296] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16297] <... futex resumed>)        = 0
[pid 16297] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16297] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16297] <... futex resumed>)        = 0
[pid 16297] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16297] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16297] <... futex resumed>)        = 0
[pid 16297] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16297] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16296] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16297] <... futex resumed>)        = 0
[pid 16297] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16296] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16297] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16297] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16297] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16296] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16296] exit_group(0)               = ?
[pid 16297] <... futex resumed>)        = ?
[pid 16297] +++ exited with 0 +++
[pid 16296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16298
./strace-static-x86_64: Process 16298 attached
[pid 16298] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16298] setpgid(0, 0)               = 0
[pid 16298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16298] write(3, "1000", 4)         = 4
[pid 16298] close(3)                    = 0
executing program
[pid 16298] write(1, "executing program\n", 18) = 18
[pid 16298] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16298] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16298] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16298] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16298] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16298] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16298] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16299 attached
 <unfinished ...>
[pid 16299] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16299] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16298] <... clone3 resumed> => {parent_tid=[16299]}, 88) = 16299
[pid 16298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16299] <... futex resumed>)        = 0
[pid 16299] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16299] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16299] <... futex resumed>)        = 0
[pid 16298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16299] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16299] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16298] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16299] <... futex resumed>)        = 0
[pid 16299] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16299] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16298] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16298] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16299] <... futex resumed>)        = 0
[pid 16298] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16299] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16299] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16299] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16298] <... futex resumed>)        = 0
[pid 16298] exit_group(0)               = ?
[pid 16299] <... futex resumed>)        = ?
[pid 16299] +++ exited with 0 +++
[pid 16298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16300 attached
, child_tidptr=0x55557060c690) = 16300
[pid 16300] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16300] setpgid(0, 0)               = 0
[pid 16300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16300] write(3, "1000", 4)         = 4
[pid 16300] close(3)                    = 0
executing program
[pid 16300] write(1, "executing program\n", 18) = 18
[pid 16300] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16300] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16300] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16300] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16300] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16300] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16300] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16301 attached
 => {parent_tid=[16301]}, 88) = 16301
[pid 16301] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16301] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16301] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16300] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16301] <... futex resumed>)        = 0
[pid 16300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16301] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16301] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16300] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16301] <... futex resumed>)        = 0
[pid 16301] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16301] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16301] <... futex resumed>)        = 0
[pid 16301] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16300] <... futex resumed>)        = 1
[pid 16301] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16301] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16300] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16301] <... futex resumed>)        = 0
[pid 16300] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16301] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16301] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16301] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16300] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16300] exit_group(0)               = ?
[pid 16301] <... futex resumed>)        = ?
[pid 16301] +++ exited with 0 +++
[pid 16300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16302 attached
, child_tidptr=0x55557060c690) = 16302
[pid 16302] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16302] setpgid(0, 0)               = 0
[pid 16302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16302] write(3, "1000", 4)         = 4
executing program
[pid 16302] close(3)                    = 0
[pid 16302] write(1, "executing program\n", 18) = 18
[pid 16302] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16302] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16302] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16302] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16302] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16302] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16302] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16303 attached
 => {parent_tid=[16303]}, 88) = 16303
[pid 16303] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16303] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16302] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] <... futex resumed>)        = 0
[pid 16302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16303] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16302] <... futex resumed>)        = 0
[pid 16302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] <... futex resumed>)        = 0
[pid 16303] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] <... futex resumed>)        = 0
[pid 16302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16303] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16302] <... futex resumed>)        = 0
[pid 16302] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16303] <... futex resumed>)        = 0
[pid 16303] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16302] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16303] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16303] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16303] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16302] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16302] exit_group(0)               = ?
[pid 16303] <... futex resumed>)        = ?
[pid 16303] +++ exited with 0 +++
[pid 16302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16304 attached
, child_tidptr=0x55557060c690) = 16304
[pid 16304] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16304] setpgid(0, 0)               = 0
[pid 16304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16304] write(3, "1000", 4)         = 4
[pid 16304] close(3)                    = 0
executing program
[pid 16304] write(1, "executing program\n", 18) = 18
[pid 16304] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16304] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16304] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16304] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16304] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16304] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16304] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16305 attached
 => {parent_tid=[16305]}, 88) = 16305
[pid 16305] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16305] <... futex resumed>)        = 0
[pid 16304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16305] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16304] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16305] <... futex resumed>)        = 0
[pid 16304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16305] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16304] <... futex resumed>)        = 0
[pid 16305] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16305] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16304] <... futex resumed>)        = 0
[pid 16304] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16304] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16305] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16305] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16304] <... futex resumed>)        = 0
[pid 16305] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16304] exit_group(0)               = ?
[pid 16305] <... futex resumed>)        = ?
[pid 16305] +++ exited with 0 +++
[pid 16304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16306
./strace-static-x86_64: Process 16306 attached
[pid 16306] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16306] setpgid(0, 0)               = 0
[pid 16306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16306] write(3, "1000", 4)         = 4
[pid 16306] close(3)                    = 0
[pid 16306] write(1, "executing program\n", 18executing program
) = 18
[pid 16306] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16306] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16306] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16306] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16306] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16306] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16306] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16307 attached
 => {parent_tid=[16307]}, 88) = 16307
[pid 16307] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16307] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16307] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16307] <... futex resumed>)        = 0
[pid 16306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16307] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16307] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16306] <... futex resumed>)        = 0
[pid 16306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16307] <... futex resumed>)        = 0
[pid 16307] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16307] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16306] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16307] <... futex resumed>)        = 0
[pid 16307] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16307] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16307] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16306] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16306] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16307] <... futex resumed>)        = 0
[pid 16306] <... futex resumed>)        = 1
[pid 16306] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16307] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16307] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16306] <... futex resumed>)        = 0
[pid 16307] <... futex resumed>)        = 1
[pid 16306] exit_group(0)               = ?
[pid 16307] +++ exited with 0 +++
[pid 16306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16308
./strace-static-x86_64: Process 16308 attached
[pid 16308] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16308] setpgid(0, 0)               = 0
[pid 16308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16308] write(3, "1000", 4)         = 4
[pid 16308] close(3)                    = 0
executing program
[pid 16308] write(1, "executing program\n", 18) = 18
[pid 16308] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16308] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16308] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16309 attached
 => {parent_tid=[16309]}, 88) = 16309
[pid 16309] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16308] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16309] <... set_robust_list resumed>) = 0
[pid 16308] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16309] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16309] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16309] <... futex resumed>)        = 0
[pid 16308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16309] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16309] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16308] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16309] <... futex resumed>)        = 0
[pid 16309] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16309] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16309] <... futex resumed>)        = 0
[pid 16308] <... futex resumed>)        = 1
[pid 16309] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16309] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16309] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16308] <... futex resumed>)        = 0
[pid 16309] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16308] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16308] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16309] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16309] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16309] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16308] <... futex resumed>)        = 0
[pid 16308] exit_group(0)               = ?
[pid 16309] <... futex resumed>)        = ?
[pid 16309] +++ exited with 0 +++
[pid 16308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16310 attached
, child_tidptr=0x55557060c690) = 16310
[pid 16310] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16310] setpgid(0, 0)               = 0
[pid 16310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16310] write(3, "1000", 4)         = 4
[pid 16310] close(3)                    = 0
[pid 16310] write(1, "executing program\n", 18executing program
) = 18
[pid 16310] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16310] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16310] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16310] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16310] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16310] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16310] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16311 attached
 <unfinished ...>
[pid 16311] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16311] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16310] <... clone3 resumed> => {parent_tid=[16311]}, 88) = 16311
[pid 16311] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16311] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16311] <... futex resumed>)        = 0
[pid 16310] <... futex resumed>)        = 1
[pid 16311] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16311] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16311] <... futex resumed>)        = 0
[pid 16310] <... futex resumed>)        = 1
[pid 16311] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16311] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16311] <... futex resumed>)        = 0
[pid 16310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16311] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16311] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16310] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16310] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16311] <... futex resumed>)        = 0
[pid 16311] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16311] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16311] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16310] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16310] exit_group(0)               = ?
[pid 16311] <... futex resumed>)        = ?
[pid 16311] +++ exited with 0 +++
[pid 16310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16312
./strace-static-x86_64: Process 16312 attached
[pid 16312] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16312] setpgid(0, 0)               = 0
[pid 16312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16312] write(3, "1000", 4)         = 4
[pid 16312] close(3executing program
)                    = 0
[pid 16312] write(1, "executing program\n", 18) = 18
[pid 16312] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16312] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16312] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16312] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16312] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16312] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16312] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16313 attached
 <unfinished ...>
[pid 16313] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16312] <... clone3 resumed> => {parent_tid=[16313]}, 88) = 16313
[pid 16312] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16313] <... futex resumed>)        = 0
[pid 16312] <... futex resumed>)        = 1
[pid 16313] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16313] <... futex resumed>)        = 0
[pid 16312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16313] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16312] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16313] <... futex resumed>)        = 0
[pid 16312] <... futex resumed>)        = 1
[pid 16313] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16313] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16312] <... futex resumed>)        = 0
[pid 16313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16312] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16313] <... futex resumed>)        = 0
[pid 16312] <... futex resumed>)        = 1
[pid 16312] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16313] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16313] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16312] <... futex resumed>)        = 0
[pid 16313] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16312] exit_group(0)               = ?
[pid 16313] <... futex resumed>)        = ?
[pid 16313] +++ exited with 0 +++
[pid 16312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
executing program
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16314
./strace-static-x86_64: Process 16314 attached
[pid 16314] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16314] setpgid(0, 0)               = 0
[pid 16314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16314] write(3, "1000", 4)         = 4
[pid 16314] close(3)                    = 0
[pid 16314] write(1, "executing program\n", 18) = 18
[pid 16314] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16314] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16314] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16314] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16314] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16314] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16314] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16315]}, 88) = 16315
./strace-static-x86_64: Process 16315 attached
[pid 16314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16315] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16315] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16315] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16314] <... futex resumed>)        = 0
[pid 16314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16315] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16314] <... futex resumed>)        = 0
[pid 16314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16315] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16314] <... futex resumed>)        = 0
[pid 16314] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16314] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16315] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16315] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16314] <... futex resumed>)        = 0
[pid 16314] exit_group(0)               = ?
[pid 16315] +++ exited with 0 +++
[pid 16314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16316 attached
 <unfinished ...>
[pid 16316] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16316] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16316
[pid 16316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16316] write(3, "1000", 4)         = 4
[pid 16316] close(3)                    = 0
[pid 16316] write(1, "executing program\n", 18executing program
) = 18
[pid 16316] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16316] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16316] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16317 attached
 => {parent_tid=[16317]}, 88) = 16317
[pid 16317] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16317] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16316] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16317] <... futex resumed>)        = 0
[pid 16317] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16317] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16317] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16316] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16317] <... futex resumed>)        = 0
[pid 16317] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16317] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16317] <... futex resumed>)        = 0
[pid 16317] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16317] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16316] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16317] <... futex resumed>)        = 0
[pid 16316] <... futex resumed>)        = 1
[pid 16317] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16317] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16317] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16316] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16316] exit_group(0)               = ?
[pid 16317] <... futex resumed>)        = ?
[pid 16317] +++ exited with 0 +++
[pid 16316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16318
./strace-static-x86_64: Process 16318 attached
[pid 16318] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16318] setpgid(0, 0)               = 0
[pid 16318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16318] write(3, "1000", 4)         = 4
[pid 16318] close(3)                    = 0
[pid 16318] write(1, "executing program\n", 18executing program
) = 18
[pid 16318] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16318] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16318] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16318] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16318] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16318] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16318] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16319]}, 88) = 16319
[pid 16318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16319 attached
 <unfinished ...>
[pid 16319] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16319] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16318] <... futex resumed>)        = 0
[pid 16318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16319] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16318] <... futex resumed>)        = 0
[pid 16318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16319] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16318] <... futex resumed>)        = 0
[pid 16318] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16318] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16319] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16319] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16318] <... futex resumed>)        = 0
[pid 16318] exit_group(0)               = ?
[pid 16319] +++ exited with 0 +++
[pid 16318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16320 attached
 <unfinished ...>
[pid 16320] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16320] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16320
[pid 16320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16320] write(3, "1000", 4)         = 4
[pid 16320] close(3)                    = 0
executing program
[pid 16320] write(1, "executing program\n", 18) = 18
[pid 16320] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16320] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16320] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16320] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16320] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16320] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16320] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16321 attached
 => {parent_tid=[16321]}, 88) = 16321
[pid 16321] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16321] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16320] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16321] <... futex resumed>)        = 0
[pid 16321] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16321] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16321] <... futex resumed>)        = 0
[pid 16321] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 1
[pid 16321] <... futex resumed>)        = 0
[pid 16321] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16320] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16321] <... futex resumed>)        = 0
[pid 16320] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16321] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16321] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16321] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16320] exit_group(0)               = ?
[pid 16321] <... futex resumed>)        = ?
[pid 16321] +++ exited with 0 +++
[pid 16320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16322
./strace-static-x86_64: Process 16322 attached
[pid 16322] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16322] setpgid(0, 0)               = 0
[pid 16322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16322] write(3, "1000", 4)         = 4
[pid 16322] close(3)                    = 0
[pid 16322] write(1, "executing program\n", 18) = 18
[pid 16322] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16322] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16322] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16322] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16322] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16322] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16322] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16323 attached
 <unfinished ...>
[pid 16323] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16323] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16323] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16322] <... clone3 resumed> => {parent_tid=[16323]}, 88) = 16323
[pid 16322] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16323] <... futex resumed>)        = 0
[pid 16323] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16323] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16323] <... futex resumed>)        = 0
[pid 16322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16323] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16323] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16322] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16323] <... futex resumed>)        = 0
[pid 16323] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16323] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16322] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16323] <... futex resumed>)        = 0
[pid 16322] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16323] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16323] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16323] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16322] <... futex resumed>)        = 0
[pid 16322] exit_group(0)               = ?
[pid 16323] <... futex resumed>)        = ?
[pid 16323] +++ exited with 0 +++
[pid 16322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16324
./strace-static-x86_64: Process 16324 attached
[pid 16324] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16324] setpgid(0, 0)               = 0
[pid 16324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16324] write(3, "1000", 4)         = 4
[pid 16324] close(3)                    = 0
executing program
[pid 16324] write(1, "executing program\n", 18) = 18
[pid 16324] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16324] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16324] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16324] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16324] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16324] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16324] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16325 attached
 => {parent_tid=[16325]}, 88) = 16325
[pid 16325] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16325] <... futex resumed>)        = 0
[pid 16324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16325] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16324] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16325] <... futex resumed>)        = 0
[pid 16325] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16325] <... futex resumed>)        = 0
[pid 16324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16325] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16324] <... futex resumed>)        = 0
[pid 16324] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16324] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16325] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16325] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16324] <... futex resumed>)        = 0
[pid 16325] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16324] exit_group(0)               = ?
[pid 16325] <... futex resumed>)        = ?
[pid 16325] +++ exited with 0 +++
[pid 16324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16326 attached
, child_tidptr=0x55557060c690) = 16326
[pid 16326] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16326] setpgid(0, 0)               = 0
[pid 16326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16326] write(3, "1000", 4)         = 4
[pid 16326] close(3)                    = 0
[pid 16326] write(1, "executing program\n", 18executing program
) = 18
[pid 16326] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16326] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16326] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16326] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16327]}, 88) = 16327
[pid 16326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16327 attached
 <unfinished ...>
[pid 16327] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16327] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16327] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16326] <... futex resumed>)        = 0
[pid 16326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16327] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16326] <... futex resumed>)        = 0
[pid 16326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16327] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16326] <... futex resumed>)        = 0
[pid 16326] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16326] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16327] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16327] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16326] <... futex resumed>)        = 0
[pid 16326] exit_group(0)               = ?
[pid 16327] +++ exited with 0 +++
[pid 16326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16328 attached
 <unfinished ...>
[pid 16328] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16328
[pid 16328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16328] setpgid(0, 0)               = 0
[pid 16328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16328] write(3, "1000", 4)         = 4
[pid 16328] close(3)                    = 0
[pid 16328] write(1, "executing program\n", 18executing program
) = 18
[pid 16328] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16328] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16328] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16328] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16328] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16328] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16328] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16329 attached
 => {parent_tid=[16329]}, 88) = 16329
[pid 16329] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16328] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16329] <... set_robust_list resumed>) = 0
[pid 16329] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16329] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16328] <... futex resumed>)        = 0
[pid 16328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16329] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16328] <... futex resumed>)        = 0
[pid 16328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16329] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16328] <... futex resumed>)        = 0
[pid 16328] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16329] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16328] <... futex resumed>)        = 0
[pid 16328] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16329] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16329] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16328] <... futex resumed>)        = 0
[pid 16328] exit_group(0)               = ?
[pid 16329] +++ exited with 0 +++
[pid 16328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16330 attached
, child_tidptr=0x55557060c690) = 16330
[pid 16330] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16330] setpgid(0, 0)               = 0
[pid 16330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16330] write(3, "1000", 4)         = 4
[pid 16330] close(3)                    = 0
[pid 16330] write(1, "executing program\n", 18executing program
) = 18
[pid 16330] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16330] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16330] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16330] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16330] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16330] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16330] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16331]}, 88) = 16331
[pid 16330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16331 attached
 <unfinished ...>
[pid 16331] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16331] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16330] <... futex resumed>)        = 0
[pid 16330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16331] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16330] <... futex resumed>)        = 0
[pid 16330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16331] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16330] <... futex resumed>)        = 0
[pid 16330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16331] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16330] <... futex resumed>)        = 0
[pid 16330] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16330] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16331] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16331] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16330] <... futex resumed>)        = 0
[pid 16330] exit_group(0)               = ?
[pid 16331] +++ exited with 0 +++
[pid 16330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16332 attached
 <unfinished ...>
[pid 16332] set_robust_list(0x55557060c6a0, 24) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16332
[pid 16332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16332] setpgid(0, 0)               = 0
[pid 16332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16332] write(3, "1000", 4)         = 4
[pid 16332] close(3)                    = 0
[pid 16332] write(1, "executing program\n", 18executing program
) = 18
[pid 16332] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16332] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16332] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16332] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16333]}, 88) = 16333
[pid 16332] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16333 attached
 <unfinished ...>
[pid 16333] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16333] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16333] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16332] <... futex resumed>)        = 0
[pid 16332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16333] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16332] <... futex resumed>)        = 0
[pid 16332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16333] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16332] <... futex resumed>)        = 0
[pid 16332] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16332] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16333] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16333] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16332] <... futex resumed>)        = 0
[pid 16332] exit_group(0)               = ?
[pid 16333] +++ exited with 0 +++
[pid 16332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16334 attached
 <unfinished ...>
[pid 16334] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16334] setpgid(0, 0 <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16334
[pid 16334] <... setpgid resumed>)      = 0
[pid 16334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16334] write(3, "1000", 4)         = 4
[pid 16334] close(3)                    = 0
[pid 16334] write(1, "executing program\n", 18executing program
) = 18
[pid 16334] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16334] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16334] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16334] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16334] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16334] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16334] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16335 attached
 => {parent_tid=[16335]}, 88) = 16335
[pid 16335] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16335] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16334] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16335] <... futex resumed>)        = 0
[pid 16335] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16335] <... futex resumed>)        = 0
[pid 16334] <... futex resumed>)        = 1
[pid 16335] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16335] <... futex resumed>)        = 0
[pid 16335] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16334] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16335] <... futex resumed>)        = 0
[pid 16335] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16335] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16335] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16334] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16334] exit_group(0)               = ?
[pid 16335] <... futex resumed>)        = ?
[pid 16335] +++ exited with 0 +++
[pid 16334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16336
./strace-static-x86_64: Process 16336 attached
[pid 16336] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16336] setpgid(0, 0)               = 0
[pid 16336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16336] write(3, "1000", 4)         = 4
[pid 16336] close(3)                    = 0
executing program
[pid 16336] write(1, "executing program\n", 18) = 18
[pid 16336] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16336] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16336] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16336] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16336] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16336] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16336] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16337 attached
 <unfinished ...>
[pid 16337] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16337] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16336] <... clone3 resumed> => {parent_tid=[16337]}, 88) = 16337
[pid 16336] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16337] <... futex resumed>)        = 0
[pid 16336] <... futex resumed>)        = 1
[pid 16337] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16337] <... futex resumed>)        = 0
[pid 16336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16337] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16336] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16337] <... futex resumed>)        = 0
[pid 16336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16337] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16336] <... futex resumed>)        = 0
[pid 16337] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16336] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16337] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16336] <... futex resumed>)        = 0
[pid 16336] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16337] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16337] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16336] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16337] <... futex resumed>)        = 0
[pid 16336] exit_group(0)               = ?
[pid 16337] +++ exited with 0 +++
[pid 16336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16338
./strace-static-x86_64: Process 16338 attached
[pid 16338] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16338] setpgid(0, 0)               = 0
[pid 16338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16338] write(3, "1000", 4)         = 4
[pid 16338] close(3)                    = 0
executing program
[pid 16338] write(1, "executing program\n", 18) = 18
[pid 16338] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16338] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16338] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16338] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16338] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16338] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16338] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16339 attached
 => {parent_tid=[16339]}, 88) = 16339
[pid 16339] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16339] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16338] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16339] <... futex resumed>)        = 0
[pid 16338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16339] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16339] <... futex resumed>)        = 0
[pid 16339] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16339] <... futex resumed>)        = 0
[pid 16338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16339] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16338] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16338] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16339] <... futex resumed>)        = 0
[pid 16338] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16339] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16339] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16339] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16338] <... futex resumed>)        = 0
[pid 16338] exit_group(0)               = ?
[pid 16339] <... futex resumed>)        = ?
[pid 16339] +++ exited with 0 +++
[pid 16338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16340
./strace-static-x86_64: Process 16340 attached
[pid 16340] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16340] setpgid(0, 0)               = 0
[pid 16340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16340] write(3, "1000", 4)         = 4
[pid 16340] close(3)                    = 0
[pid 16340] write(1, "executing program\n", 18executing program
) = 18
[pid 16340] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16340] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16340] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16340] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16340] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16340] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16340] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16341]}, 88) = 16341
[pid 16340] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16341 attached
 <unfinished ...>
[pid 16341] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16341] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16341] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16341] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16340] <... futex resumed>)        = 0
[pid 16340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16341] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16341] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16340] <... futex resumed>)        = 0
[pid 16340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16341] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16340] <... futex resumed>)        = 0
[pid 16340] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16340] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16341] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16341] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16340] <... futex resumed>)        = 0
[pid 16340] exit_group(0)               = ?
[pid 16341] +++ exited with 0 +++
[pid 16340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16342
./strace-static-x86_64: Process 16342 attached
[pid 16342] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16342] setpgid(0, 0)               = 0
[pid 16342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16342] write(3, "1000", 4)         = 4
[pid 16342] close(3)                    = 0
[pid 16342] write(1, "executing program\n", 18executing program
) = 18
[pid 16342] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16342] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16342] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16342] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16342] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16342] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16342] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16343 attached
 => {parent_tid=[16343]}, 88) = 16343
[pid 16343] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16343] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16343] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16342] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16343] <... futex resumed>)        = 0
[pid 16343] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16343] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16343] <... futex resumed>)        = 0
[pid 16343] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16343] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16343] <... futex resumed>)        = 0
[pid 16343] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16343] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16342] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16343] <... futex resumed>)        = 0
[pid 16343] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16342] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16343] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16343] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16343] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16342] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16342] exit_group(0)               = ?
[pid 16343] <... futex resumed>)        = ?
[pid 16343] +++ exited with 0 +++
[pid 16342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16344 attached
, child_tidptr=0x55557060c690) = 16344
[pid 16344] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16344] setpgid(0, 0)               = 0
[pid 16344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16344] write(3, "1000", 4)         = 4
[pid 16344] close(3)                    = 0
[pid 16344] write(1, "executing program\n", 18executing program
) = 18
[pid 16344] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16344] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16344] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16345 attached
 <unfinished ...>
[pid 16345] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16344] <... clone3 resumed> => {parent_tid=[16345]}, 88) = 16345
[pid 16344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16345] <... futex resumed>)        = 0
[pid 16345] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16345] <... futex resumed>)        = 0
[pid 16345] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16345] <... futex resumed>)        = 0
[pid 16345] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16344] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16345] <... futex resumed>)        = 0
[pid 16344] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16345] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16345] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16344] <... futex resumed>)        = 0
[pid 16345] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16344] exit_group(0)               = ?
[pid 16345] <... futex resumed>)        = ?
[pid 16345] +++ exited with 0 +++
[pid 16344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16346
./strace-static-x86_64: Process 16346 attached
[pid 16346] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16346] setpgid(0, 0)               = 0
[pid 16346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16346] write(3, "1000", 4)         = 4
[pid 16346] close(3)                    = 0
[pid 16346] write(1, "executing program\n", 18executing program
) = 18
[pid 16346] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16346] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16346] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16346] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16346] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16346] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16346] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16347 attached
 => {parent_tid=[16347]}, 88) = 16347
[pid 16347] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16347] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16347] <... futex resumed>)        = 0
[pid 16346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16347] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16346] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16347] <... futex resumed>)        = 0
[pid 16347] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16347] <... futex resumed>)        = 0
[pid 16346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16347] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16346] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16346] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16347] <... futex resumed>)        = 0
[pid 16347] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16346] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16347] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16347] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16346] <... futex resumed>)        = 0
[pid 16347] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16346] exit_group(0)               = ?
[pid 16347] <... futex resumed>)        = ?
[pid 16347] +++ exited with 0 +++
[pid 16346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16348 attached
, child_tidptr=0x55557060c690) = 16348
[pid 16348] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16348] setpgid(0, 0)               = 0
[pid 16348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16348] write(3, "1000", 4)         = 4
[pid 16348] close(3)                    = 0
[pid 16348] write(1, "executing program\n", 18executing program
) = 18
[pid 16348] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16348] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16348] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16348] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16349 attached
 <unfinished ...>
[pid 16349] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16349] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16348] <... clone3 resumed> => {parent_tid=[16349]}, 88) = 16349
[pid 16348] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16349] <... futex resumed>)        = 0
[pid 16348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16349] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16349] <... futex resumed>)        = 0
[pid 16349] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16349] <... futex resumed>)        = 0
[pid 16348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16349] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16348] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16349] <... futex resumed>)        = 0
[pid 16349] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16348] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16349] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16349] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16349] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16348] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16348] exit_group(0)               = ?
[pid 16349] <... futex resumed>)        = ?
[pid 16349] +++ exited with 0 +++
[pid 16348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16350
./strace-static-x86_64: Process 16350 attached
[pid 16350] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16350] setpgid(0, 0)               = 0
[pid 16350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16350] write(3, "1000", 4)         = 4
[pid 16350] close(3)                    = 0
executing program
[pid 16350] write(1, "executing program\n", 18) = 18
[pid 16350] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16350] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16350] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16350] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16351 attached
 <unfinished ...>
[pid 16351] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16350] <... clone3 resumed> => {parent_tid=[16351]}, 88) = 16351
[pid 16350] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16351] <... futex resumed>)        = 0
[pid 16351] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16351] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16350] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16351] <... futex resumed>)        = 0
[pid 16351] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16351] <... futex resumed>)        = 0
[pid 16350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16351] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16350] <... futex resumed>)        = 0
[pid 16351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16350] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16351] <... futex resumed>)        = 0
[pid 16350] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16351] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16351] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16350] <... futex resumed>)        = 0
[pid 16351] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16350] exit_group(0)               = ?
[pid 16351] <... futex resumed>)        = ?
[pid 16351] +++ exited with 0 +++
[pid 16350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16352
./strace-static-x86_64: Process 16352 attached
[pid 16352] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16352] setpgid(0, 0)               = 0
[pid 16352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16352] write(3, "1000", 4)         = 4
[pid 16352] close(3)                    = 0
executing program
[pid 16352] write(1, "executing program\n", 18) = 18
[pid 16352] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16352] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16352] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16352] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16352] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16352] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16352] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16353 attached
 <unfinished ...>
[pid 16353] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16353] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16353] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16352] <... clone3 resumed> => {parent_tid=[16353]}, 88) = 16353
[pid 16352] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16353] <... futex resumed>)        = 0
[pid 16353] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16353] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16353] <... futex resumed>)        = 0
[pid 16352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16353] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16353] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16352] <... futex resumed>)        = 0
[pid 16352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16353] <... futex resumed>)        = 0
[pid 16352] <... futex resumed>)        = 1
[pid 16353] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16353] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16352] <... futex resumed>)        = 0
[pid 16353] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16352] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16353] <... futex resumed>)        = 0
[pid 16352] <... futex resumed>)        = 1
[pid 16352] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16353] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16353] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16352] <... futex resumed>)        = 0
[pid 16353] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16352] exit_group(0)               = ?
[pid 16353] <... futex resumed>)        = ?
[pid 16353] +++ exited with 0 +++
[pid 16352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16354 attached
, child_tidptr=0x55557060c690) = 16354
[pid 16354] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16354] setpgid(0, 0)               = 0
[pid 16354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16354] write(3, "1000", 4)         = 4
[pid 16354] close(3)                    = 0
[pid 16354] write(1, "executing program\n", 18executing program
) = 18
[pid 16354] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16354] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16354] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16354] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16354] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16354] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16354] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16355]}, 88) = 16355
[pid 16354] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16355 attached
 <unfinished ...>
[pid 16355] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16355] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16354] <... futex resumed>)        = 0
[pid 16355] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16355] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16355] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16354] <... futex resumed>)        = 0
[pid 16354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16355] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16354] <... futex resumed>)        = 0
[pid 16354] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16354] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16355] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16355] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16354] <... futex resumed>)        = 0
[pid 16354] exit_group(0)               = ?
[pid 16355] +++ exited with 0 +++
[pid 16354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16356 attached
 <unfinished ...>
[pid 16356] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16356] setpgid(0, 0)               = 0
[pid 16356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16356
[pid 16356] <... openat resumed>)       = 3
[pid 16356] write(3, "1000", 4)         = 4
[pid 16356] close(3executing program
)                    = 0
[pid 16356] write(1, "executing program\n", 18) = 18
[pid 16356] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16356] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16356] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16356] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16356] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16356] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16356] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16357 attached
 => {parent_tid=[16357]}, 88) = 16357
[pid 16357] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16356] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16357] <... futex resumed>)        = 0
[pid 16357] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16357] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16356] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16357] <... futex resumed>)        = 0
[pid 16357] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16357] <... futex resumed>)        = 0
[pid 16357] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16356] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16357] <... futex resumed>)        = 0
[pid 16357] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16356] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16357] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16357] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16357] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16356] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16356] exit_group(0)               = ?
[pid 16357] <... futex resumed>)        = ?
[pid 16357] +++ exited with 0 +++
[pid 16356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16356, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16358
./strace-static-x86_64: Process 16358 attached
[pid 16358] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16358] setpgid(0, 0)               = 0
[pid 16358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16358] write(3, "1000", 4)         = 4
[pid 16358] close(3executing program
)                    = 0
[pid 16358] write(1, "executing program\n", 18) = 18
[pid 16358] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16358] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16358] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16358] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16358] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16358] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16358] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16359 attached
 => {parent_tid=[16359]}, 88) = 16359
[pid 16359] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16359] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16359] <... futex resumed>)        = 0
[pid 16359] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16359] <... futex resumed>)        = 0
[pid 16359] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16359] <... futex resumed>)        = 0
[pid 16359] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16358] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16359] <... futex resumed>)        = 0
[pid 16358] <... futex resumed>)        = 1
[pid 16359] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16358] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16359] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16359] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16358] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16358] exit_group(0)               = ?
[pid 16359] <... futex resumed>)        = ?
[pid 16359] +++ exited with 0 +++
[pid 16358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16360
./strace-static-x86_64: Process 16360 attached
[pid 16360] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16360] setpgid(0, 0)               = 0
[pid 16360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16360] write(3, "1000", 4)         = 4
[pid 16360] close(3)                    = 0
[pid 16360] write(1, "executing program\n", 18executing program
) = 18
[pid 16360] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16360] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16360] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16360] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16360] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16360] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16360] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16361 attached
 <unfinished ...>
[pid 16361] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16361] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16361] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16360] <... clone3 resumed> => {parent_tid=[16361]}, 88) = 16361
[pid 16360] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16361] <... futex resumed>)        = 0
[pid 16360] <... futex resumed>)        = 1
[pid 16361] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16361] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16361] <... futex resumed>)        = 0
[pid 16361] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16361] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16361] <... futex resumed>)        = 0
[pid 16361] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16361] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16360] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16361] <... futex resumed>)        = 0
[pid 16360] <... futex resumed>)        = 1
[pid 16361] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16360] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16361] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16361] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16361] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16360] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16360] exit_group(0)               = ?
[pid 16361] <... futex resumed>)        = ?
[pid 16361] +++ exited with 0 +++
[pid 16360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16362
./strace-static-x86_64: Process 16362 attached
[pid 16362] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16362] setpgid(0, 0)               = 0
[pid 16362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16362] write(3, "1000", 4)         = 4
[pid 16362] close(3)                    = 0
[pid 16362] write(1, "executing program\n", 18executing program
) = 18
[pid 16362] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16362] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16362] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16362] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16362] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16362] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16362] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16363 attached
 => {parent_tid=[16363]}, 88) = 16363
[pid 16363] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16363] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16363] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16362] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16363] <... futex resumed>)        = 0
[pid 16363] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16363] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16363] <... futex resumed>)        = 0
[pid 16362] <... futex resumed>)        = 1
[pid 16363] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16363] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16363] <... futex resumed>)        = 0
[pid 16363] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16363] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16362] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16363] <... futex resumed>)        = 0
[pid 16362] <... futex resumed>)        = 1
[pid 16363] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16362] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16363] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16363] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16363] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16362] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16362] exit_group(0)               = ?
[pid 16363] <... futex resumed>)        = ?
[pid 16363] +++ exited with 0 +++
[pid 16362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16364
./strace-static-x86_64: Process 16364 attached
executing program
[pid 16364] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16364] setpgid(0, 0)               = 0
[pid 16364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16364] write(3, "1000", 4)         = 4
[pid 16364] close(3)                    = 0
[pid 16364] write(1, "executing program\n", 18) = 18
[pid 16364] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16364] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16364] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16364] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16364] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16364] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16364] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16365 attached
 <unfinished ...>
[pid 16365] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16364] <... clone3 resumed> => {parent_tid=[16365]}, 88) = 16365
[pid 16365] <... set_robust_list resumed>) = 0
[pid 16365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16365] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16365] <... futex resumed>)        = 0
[pid 16364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16365] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16365] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16364] <... futex resumed>)        = 0
[pid 16364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16365] <... futex resumed>)        = 0
[pid 16365] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16365] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16364] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16365] <... futex resumed>)        = 0
[pid 16365] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16365] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16364] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16364] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16365] <... futex resumed>)        = 0
[pid 16364] <... futex resumed>)        = 1
[pid 16364] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16365] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16365] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16364] <... futex resumed>)        = 0
[pid 16365] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16364] exit_group(0)               = ?
[pid 16365] <... futex resumed>)        = ?
[pid 16365] +++ exited with 0 +++
[pid 16364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16364, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16366
./strace-static-x86_64: Process 16366 attached
[pid 16366] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16366] setpgid(0, 0)               = 0
[pid 16366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16366] write(3, "1000", 4)         = 4
[pid 16366] close(3)                    = 0
[pid 16366] write(1, "executing program\n", 18executing program
) = 18
[pid 16366] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16366] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16366] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16366] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16366] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16366] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16366] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16367 attached
 => {parent_tid=[16367]}, 88) = 16367
[pid 16367] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16367] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16366] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16367] <... futex resumed>)        = 0
[pid 16367] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16367] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16367] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16366] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16367] <... futex resumed>)        = 0
[pid 16367] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16367] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16366] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16367] <... futex resumed>)        = 0
[pid 16367] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16367] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16366] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16367] <... futex resumed>)        = 0
[pid 16366] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16367] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16367] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16367] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16366] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16366] exit_group(0)               = ?
[pid 16367] <... futex resumed>)        = ?
[pid 16367] +++ exited with 0 +++
[pid 16366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16368 attached
, child_tidptr=0x55557060c690) = 16368
[pid 16368] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16368] setpgid(0, 0)               = 0
[pid 16368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16368] write(3, "1000", 4)         = 4
[pid 16368] close(3)                    = 0
[pid 16368] write(1, "executing program\n", 18executing program
) = 18
[pid 16368] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16368] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16368] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16368] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16368] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16368] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16368] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16369]}, 88) = 16369
[pid 16368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16369 attached
 <unfinished ...>
[pid 16369] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16369] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16369] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16368] <... futex resumed>)        = 0
[pid 16368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16369] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16368] <... futex resumed>)        = 0
[pid 16368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16369] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16368] <... futex resumed>)        = 0
[pid 16368] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16368] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16369] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16369] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16368] <... futex resumed>)        = 0
[pid 16368] exit_group(0)               = ?
[pid 16369] +++ exited with 0 +++
[pid 16368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16370 attached
, child_tidptr=0x55557060c690) = 16370
[pid 16370] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16370] setpgid(0, 0)               = 0
[pid 16370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16370] write(3, "1000", 4)         = 4
[pid 16370] close(3)                    = 0
[pid 16370] write(1, "executing program\n", 18executing program
) = 18
[pid 16370] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16370] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16370] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16370] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16370] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16370] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16370] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16371 attached
 => {parent_tid=[16371]}, 88) = 16371
[pid 16371] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16371] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16371] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16370] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16371] <... futex resumed>)        = 0
[pid 16371] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16371] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16371] <... futex resumed>)        = 0
[pid 16371] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16371] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16371] <... futex resumed>)        = 0
[pid 16371] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16371] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16370] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16371] <... futex resumed>)        = 0
[pid 16370] <... futex resumed>)        = 1
[pid 16371] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16370] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16371] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16371] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16371] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16370] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16370] exit_group(0)               = ?
[pid 16371] <... futex resumed>)        = ?
[pid 16371] +++ exited with 0 +++
[pid 16370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16372 attached
, child_tidptr=0x55557060c690) = 16372
[pid 16372] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16372] setpgid(0, 0)               = 0
[pid 16372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16372] write(3, "1000", 4)         = 4
[pid 16372] close(3)                    = 0
executing program
[pid 16372] write(1, "executing program\n", 18) = 18
[pid 16372] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16372] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16372] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16372] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16373 attached
 => {parent_tid=[16373]}, 88) = 16373
[pid 16372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16373] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16373] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16373] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16372] <... futex resumed>)        = 0
[pid 16372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16373] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16372] <... futex resumed>)        = 0
[pid 16372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16373] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16372] <... futex resumed>)        = 0
[pid 16372] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16372] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16373] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16373] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16372] <... futex resumed>)        = 0
[pid 16373] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16372] exit_group(0)               = ?
[pid 16373] <... futex resumed>)        = ?
[pid 16373] +++ exited with 0 +++
[pid 16372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16374
./strace-static-x86_64: Process 16374 attached
[pid 16374] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16374] setpgid(0, 0)               = 0
[pid 16374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16374] write(3, "1000", 4)         = 4
[pid 16374] close(3)                    = 0
[pid 16374] write(1, "executing program\n", 18executing program
) = 18
[pid 16374] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16374] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16374] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16374] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16374] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16374] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16374] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16375 attached
 => {parent_tid=[16375]}, 88) = 16375
[pid 16375] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16375] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16374] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16375] <... futex resumed>)        = 0
[pid 16375] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16375] <... futex resumed>)        = 0
[pid 16374] <... futex resumed>)        = 1
[pid 16375] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16375] <... futex resumed>)        = 0
[pid 16375] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16375] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16374] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16375] <... futex resumed>)        = 0
[pid 16374] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16375] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16375] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16374] <... futex resumed>)        = 0
[pid 16374] exit_group(0)               = ?
[pid 16375] +++ exited with 0 +++
[pid 16374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16376 attached
, child_tidptr=0x55557060c690) = 16376
[pid 16376] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16376] setpgid(0, 0)               = 0
[pid 16376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16376] write(3, "1000", 4)         = 4
[pid 16376] close(3)                    = 0
[pid 16376] write(1, "executing program\n", 18executing program
) = 18
[pid 16376] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16376] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16376] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16376] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16376] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16376] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16376] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16377]}, 88) = 16377
[pid 16376] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16377 attached
 <unfinished ...>
[pid 16377] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16377] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16377] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16376] <... futex resumed>)        = 0
[pid 16376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16377] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16376] <... futex resumed>)        = 0
[pid 16376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16377] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16376] <... futex resumed>)        = 0
[pid 16376] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16376] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16377] <... futex resumed>)        = 1
[pid 16377] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16377] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16376] <... futex resumed>)        = 0
[pid 16376] exit_group(0)               = ?
[pid 16377] +++ exited with 0 +++
[pid 16376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16376, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16378 attached
, child_tidptr=0x55557060c690) = 16378
[pid 16378] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16378] setpgid(0, 0)               = 0
[pid 16378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16378] write(3, "1000", 4)         = 4
[pid 16378] close(3)                    = 0
[pid 16378] write(1, "executing program\n", 18executing program
) = 18
[pid 16378] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16378] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16378] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16378] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16378] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16378] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16378] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16379 attached
 => {parent_tid=[16379]}, 88) = 16379
[pid 16379] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16379] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16378] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16379] <... futex resumed>)        = 0
[pid 16379] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16379] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16379] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16378] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16379] <... futex resumed>)        = 0
[pid 16378] <... futex resumed>)        = 1
[pid 16379] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16379] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16379] <... futex resumed>)        = 0
[pid 16379] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16379] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16378] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16379] <... futex resumed>)        = 0
[pid 16379] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16378] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16379] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16379] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16379] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16378] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16378] exit_group(0)               = ?
[pid 16379] <... futex resumed>)        = ?
[pid 16379] +++ exited with 0 +++
[pid 16378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16380 attached
, child_tidptr=0x55557060c690) = 16380
[pid 16380] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16380] setpgid(0, 0)               = 0
[pid 16380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16380] write(3, "1000", 4)         = 4
[pid 16380] close(3)                    = 0
[pid 16380] write(1, "executing program\n", 18executing program
) = 18
[pid 16380] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16380] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16380] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16380] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16380] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16380] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16380] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16381]}, 88) = 16381
[pid 16380] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16381 attached
 <unfinished ...>
[pid 16381] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16381] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16381] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16380] <... futex resumed>)        = 0
[pid 16380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16381] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16380] <... futex resumed>)        = 0
[pid 16380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16381] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16380] <... futex resumed>)        = 0
[pid 16380] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16380] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16381] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16381] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16380] <... futex resumed>)        = 0
[pid 16380] exit_group(0)               = ?
[pid 16381] +++ exited with 0 +++
[pid 16380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16382 attached
, child_tidptr=0x55557060c690) = 16382
[pid 16382] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16382] setpgid(0, 0)               = 0
[pid 16382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16382] write(3, "1000", 4)         = 4
[pid 16382] close(3)                    = 0
[pid 16382] write(1, "executing program\n", 18executing program
) = 18
[pid 16382] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16382] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16382] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16382] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16382] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16383 attached
 => {parent_tid=[16383]}, 88) = 16383
[pid 16383] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16383] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16383] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16382] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16383] <... futex resumed>)        = 0
[pid 16383] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16383] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16383] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16382] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16383] <... futex resumed>)        = 0
[pid 16383] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16383] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16383] <... futex resumed>)        = 0
[pid 16382] <... futex resumed>)        = 1
[pid 16383] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16383] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16382] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16383] <... futex resumed>)        = 0
[pid 16383] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16382] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16383] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16383] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16383] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16382] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16382] exit_group(0)               = ?
[pid 16383] <... futex resumed>)        = ?
[pid 16383] +++ exited with 0 +++
[pid 16382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16384 attached
, child_tidptr=0x55557060c690) = 16384
[pid 16384] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16384] setpgid(0, 0)               = 0
[pid 16384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16384] write(3, "1000", 4)         = 4
[pid 16384] close(3)                    = 0
executing program
[pid 16384] write(1, "executing program\n", 18) = 18
[pid 16384] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16384] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16384] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16384] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16384] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16384] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16385 attached
 <unfinished ...>
[pid 16385] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16385] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16384] <... clone3 resumed> => {parent_tid=[16385]}, 88) = 16385
[pid 16384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16385] <... futex resumed>)        = 0
[pid 16384] <... futex resumed>)        = 1
[pid 16385] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16385] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16385] <... futex resumed>)        = 0
[pid 16384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16385] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16385] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16384] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16385] <... futex resumed>)        = 0
[pid 16384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16385] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16384] <... futex resumed>)        = 0
[pid 16384] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16384] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16385] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16385] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16384] <... futex resumed>)        = 0
[pid 16384] exit_group(0)               = ?
[pid 16385] +++ exited with 0 +++
[pid 16384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16384, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16386 attached
, child_tidptr=0x55557060c690) = 16386
[pid 16386] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16386] setpgid(0, 0)               = 0
[pid 16386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16386] write(3, "1000", 4)         = 4
[pid 16386] close(3)                    = 0
executing program
[pid 16386] write(1, "executing program\n", 18) = 18
[pid 16386] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16386] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16386] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16386] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16386] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16386] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16386] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16387 attached
 => {parent_tid=[16387]}, 88) = 16387
[pid 16386] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16387] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16386] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16387] <... set_robust_list resumed>) = 0
[pid 16387] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16387] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16386] <... futex resumed>)        = 0
[pid 16387] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16387] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16387] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16387] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16386] <... futex resumed>)        = 0
[pid 16386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16387] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16387] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16386] <... futex resumed>)        = 0
[pid 16386] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16386] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16387] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16387] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16387] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16386] <... futex resumed>)        = 0
[pid 16386] exit_group(0 <unfinished ...>
[pid 16387] <... futex resumed>)        = 231
[pid 16386] <... exit_group resumed>)   = ?
[pid 16387] +++ exited with 0 +++
[pid 16386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16388
./strace-static-x86_64: Process 16388 attached
[pid 16388] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16388] setpgid(0, 0)               = 0
[pid 16388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16388] write(3, "1000", 4)         = 4
[pid 16388] close(3)                    = 0
[pid 16388] write(1, "executing program\n", 18executing program
) = 18
[pid 16388] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16388] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16388] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16388] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16388] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16389 attached
 => {parent_tid=[16389]}, 88) = 16389
[pid 16389] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16389] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16388] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16389] <... futex resumed>)        = 0
[pid 16389] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16389] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16388] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16389] <... futex resumed>)        = 0
[pid 16389] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16389] <... futex resumed>)        = 0
[pid 16389] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16388] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16389] <... futex resumed>)        = 0
[pid 16389] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16389] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16389] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16388] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16388] exit_group(0)               = ?
[pid 16389] <... futex resumed>)        = ?
[pid 16389] +++ exited with 0 +++
[pid 16388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16390 attached
, child_tidptr=0x55557060c690) = 16390
[pid 16390] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16390] setpgid(0, 0)               = 0
[pid 16390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16390] write(3, "1000", 4)         = 4
[pid 16390] close(3)                    = 0
executing program
[pid 16390] write(1, "executing program\n", 18) = 18
[pid 16390] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16390] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16390] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16390] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16391 attached
 <unfinished ...>
[pid 16391] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16390] <... clone3 resumed> => {parent_tid=[16391]}, 88) = 16391
[pid 16391] <... set_robust_list resumed>) = 0
[pid 16390] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16391] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16390] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16391] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16391] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16390] <... futex resumed>)        = 0
[pid 16391] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16390] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16391] <... futex resumed>)        = 0
[pid 16390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16391] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16390] <... futex resumed>)        = 0
[pid 16391] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16390] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16391] <... futex resumed>)        = 0
[pid 16390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16391] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16390] <... futex resumed>)        = 0
[pid 16391] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16390] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16391] <... futex resumed>)        = 0
[pid 16390] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16391] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16390] <... futex resumed>)        = 0
[pid 16391] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16390] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16391] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16390] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16391] <... futex resumed>)        = 0
[pid 16391] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16390] exit_group(0)               = ?
[pid 16391] <... futex resumed>)        = ?
[pid 16391] +++ exited with 0 +++
[pid 16390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16392
./strace-static-x86_64: Process 16392 attached
[pid 16392] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16392] setpgid(0, 0)               = 0
[pid 16392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16392] write(3, "1000", 4)         = 4
[pid 16392] close(3)                    = 0
executing program
[pid 16392] write(1, "executing program\n", 18) = 18
[pid 16392] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16392] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16392] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16392] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16392] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16392] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16392] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16393]}, 88) = 16393
./strace-static-x86_64: Process 16393 attached
[pid 16392] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16393] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16393] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16393] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16392] <... futex resumed>)        = 0
[pid 16392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16393] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16392] <... futex resumed>)        = 0
[pid 16392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16393] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16392] <... futex resumed>)        = 0
[pid 16392] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16392] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16393] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16393] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16392] <... futex resumed>)        = 0
[pid 16392] exit_group(0)               = ?
[pid 16393] +++ exited with 0 +++
[pid 16392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16392, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16394
./strace-static-x86_64: Process 16394 attached
[pid 16394] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16394] setpgid(0, 0)               = 0
[pid 16394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16394] write(3, "1000", 4)         = 4
[pid 16394] close(3)                    = 0
[pid 16394] write(1, "executing program\n", 18executing program
) = 18
[pid 16394] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16394] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16394] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16394] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16394] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16394] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16394] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16395 attached
 => {parent_tid=[16395]}, 88) = 16395
[pid 16395] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16395] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16395] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16394] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16395] <... futex resumed>)        = 0
[pid 16395] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16395] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16395] <... futex resumed>)        = 0
[pid 16395] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16395] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16395] <... futex resumed>)        = 0
[pid 16395] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16395] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16394] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16395] <... futex resumed>)        = 0
[pid 16395] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16394] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16395] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16395] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16395] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16394] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16394] exit_group(0 <unfinished ...>
[pid 16395] <... futex resumed>)        = ?
[pid 16394] <... exit_group resumed>)   = ?
[pid 16395] +++ exited with 0 +++
[pid 16394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16396 attached
, child_tidptr=0x55557060c690) = 16396
[pid 16396] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16396] setpgid(0, 0)               = 0
[pid 16396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16396] write(3, "1000", 4)         = 4
[pid 16396] close(3executing program
)                    = 0
[pid 16396] write(1, "executing program\n", 18) = 18
[pid 16396] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16396] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16396] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16396] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16396] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16396] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16396] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16397]}, 88) = 16397
[pid 16396] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16397 attached
 <unfinished ...>
[pid 16397] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16397] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16397] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16396] <... futex resumed>)        = 0
[pid 16396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16397] <... futex resumed>)        = 1
[pid 16397] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16396] <... futex resumed>)        = 0
[pid 16396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16397] <... futex resumed>)        = 1
[pid 16397] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16396] <... futex resumed>)        = 0
[pid 16396] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16396] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16397] <... futex resumed>)        = 1
[pid 16397] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16397] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16396] <... futex resumed>)        = 0
[pid 16396] exit_group(0)               = ?
[pid 16397] <... futex resumed>)        = ?
[pid 16397] +++ exited with 0 +++
[pid 16396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16398
./strace-static-x86_64: Process 16398 attached
[pid 16398] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16398] setpgid(0, 0)               = 0
[pid 16398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16398] write(3, "1000", 4)         = 4
[pid 16398] close(3)                    = 0
executing program
[pid 16398] write(1, "executing program\n", 18) = 18
[pid 16398] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16398] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16398] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16398] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16398] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16398] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16398] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16399]}, 88) = 16399
./strace-static-x86_64: Process 16399 attached
[pid 16399] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16398] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16399] <... set_robust_list resumed>) = 0
[pid 16398] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16399] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16399] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16398] <... futex resumed>)        = 0
[pid 16398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16399] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16398] <... futex resumed>)        = 0
[pid 16398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16399] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16398] <... futex resumed>)        = 0
[pid 16398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16399] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16398] <... futex resumed>)        = 0
[pid 16398] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16398] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16399] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16399] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16399] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16398] <... futex resumed>)        = 0
[pid 16398] exit_group(0)               = ?
[pid 16399] <... futex resumed>)        = ?
[pid 16399] +++ exited with 0 +++
[pid 16398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16400 attached
, child_tidptr=0x55557060c690) = 16400
[pid 16400] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16400] setpgid(0, 0)               = 0
[pid 16400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16400] write(3, "1000", 4)         = 4
[pid 16400] close(3)                    = 0
[pid 16400] write(1, "executing program\n", 18executing program
) = 18
[pid 16400] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16400] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16400] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16400] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16400] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16400] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16400] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16401 attached
 => {parent_tid=[16401]}, 88) = 16401
[pid 16401] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16401] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16401] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16400] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16401] <... futex resumed>)        = 0
[pid 16401] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16401] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16401] <... futex resumed>)        = 0
[pid 16401] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16401] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16401] <... futex resumed>)        = 0
[pid 16400] <... futex resumed>)        = 1
[pid 16401] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16401] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16400] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16401] <... futex resumed>)        = 0
[pid 16400] <... futex resumed>)        = 1
[pid 16401] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16400] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16401] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16401] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16401] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16400] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16400] exit_group(0)               = ?
[pid 16401] <... futex resumed>)        = ?
[pid 16401] +++ exited with 0 +++
[pid 16400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16402 attached
, child_tidptr=0x55557060c690) = 16402
[pid 16402] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16402] setpgid(0, 0)               = 0
[pid 16402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16402] write(3, "1000", 4)         = 4
[pid 16402] close(3)                    = 0
executing program
[pid 16402] write(1, "executing program\n", 18) = 18
[pid 16402] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16402] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16402] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16402] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16403 attached
 => {parent_tid=[16403]}, 88) = 16403
[pid 16403] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16402] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16403] <... set_robust_list resumed>) = 0
[pid 16402] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16403] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16403] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16402] <... futex resumed>)        = 0
[pid 16403] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16403] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16402] <... futex resumed>)        = 0
[pid 16402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16403] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16402] <... futex resumed>)        = 0
[pid 16402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16403] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16402] <... futex resumed>)        = 0
[pid 16402] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16402] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16403] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16403] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16402] <... futex resumed>)        = 0
[pid 16402] exit_group(0)               = ?
[pid 16403] +++ exited with 0 +++
[pid 16402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16404
./strace-static-x86_64: Process 16404 attached
[pid 16404] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16404] setpgid(0, 0)               = 0
[pid 16404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16404] write(3, "1000", 4)         = 4
[pid 16404] close(3)                    = 0
executing program
[pid 16404] write(1, "executing program\n", 18) = 18
[pid 16404] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16404] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16404] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16404] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16404] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16404] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16404] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16405 attached
 <unfinished ...>
[pid 16405] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16404] <... clone3 resumed> => {parent_tid=[16405]}, 88) = 16405
[pid 16405] <... set_robust_list resumed>) = 0
[pid 16405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16405] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16405] <... futex resumed>)        = 0
[pid 16404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16405] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16405] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16404] <... futex resumed>)        = 0
[pid 16404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16405] <... futex resumed>)        = 0
[pid 16404] <... futex resumed>)        = 1
[pid 16405] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16405] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16404] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16405] <... futex resumed>)        = 0
[pid 16404] <... futex resumed>)        = 1
[pid 16405] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16405] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16404] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16405] <... futex resumed>)        = 0
[pid 16404] <... futex resumed>)        = 1
[pid 16404] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16405] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16405] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16404] <... futex resumed>)        = 0
[pid 16405] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16404] exit_group(0)               = ?
[pid 16405] <... futex resumed>)        = ?
[pid 16405] +++ exited with 0 +++
[pid 16404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16404, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16406 attached
, child_tidptr=0x55557060c690) = 16406
[pid 16406] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16406] setpgid(0, 0)               = 0
[pid 16406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16406] write(3, "1000", 4)         = 4
[pid 16406] close(3)                    = 0
[pid 16406] write(1, "executing program\n", 18executing program
) = 18
[pid 16406] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16406] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16406] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16406] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16406] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16406] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16406] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16407]}, 88) = 16407
[pid 16406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16407 attached
 <unfinished ...>
[pid 16407] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16407] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16407] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16406] <... futex resumed>)        = 0
[pid 16406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16407] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16406] <... futex resumed>)        = 0
[pid 16406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16407] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16406] <... futex resumed>)        = 0
[pid 16406] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16406] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16407] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16407] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16406] <... futex resumed>)        = 0
[pid 16406] exit_group(0)               = ?
[pid 16407] +++ exited with 0 +++
[pid 16406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16408 attached
, child_tidptr=0x55557060c690) = 16408
[pid 16408] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16408] setpgid(0, 0)               = 0
[pid 16408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16408] write(3, "1000", 4)         = 4
[pid 16408] close(3)                    = 0
[pid 16408] write(1, "executing program\n", 18executing program
) = 18
[pid 16408] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16408] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16408] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16408] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16409 attached
 => {parent_tid=[16409]}, 88) = 16409
[pid 16409] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16409] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16409] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16408] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16409] <... futex resumed>)        = 0
[pid 16409] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16409] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16409] <... futex resumed>)        = 0
[pid 16409] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16409] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16409] <... futex resumed>)        = 0
[pid 16408] <... futex resumed>)        = 1
[pid 16409] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16409] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16408] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16409] <... futex resumed>)        = 0
[pid 16409] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16408] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16409] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16409] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16409] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16408] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16408] exit_group(0)               = ?
[pid 16409] <... futex resumed>)        = ?
[pid 16409] +++ exited with 0 +++
[pid 16408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16410 attached
, child_tidptr=0x55557060c690) = 16410
[pid 16410] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16410] setpgid(0, 0)               = 0
[pid 16410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16410] write(3, "1000", 4)         = 4
[pid 16410] close(3)                    = 0
executing program
[pid 16410] write(1, "executing program\n", 18) = 18
[pid 16410] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16410] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16410] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16410] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16410] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16410] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16410] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16411 attached
 <unfinished ...>
[pid 16411] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16411] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16411] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16410] <... clone3 resumed> => {parent_tid=[16411]}, 88) = 16411
[pid 16410] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16411] <... futex resumed>)        = 0
[pid 16411] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16411] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16411] <... futex resumed>)        = 0
[pid 16411] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16411] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16411] <... futex resumed>)        = 0
[pid 16411] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16410] <... futex resumed>)        = 0
[pid 16410] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16410] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16411] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16411] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16410] <... futex resumed>)        = 0
[pid 16411] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16410] exit_group(0)               = ?
[pid 16411] <... futex resumed>)        = ?
[pid 16411] +++ exited with 0 +++
[pid 16410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16412 attached
, child_tidptr=0x55557060c690) = 16412
[pid 16412] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16412] setpgid(0, 0)               = 0
[pid 16412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16412] write(3, "1000", 4)         = 4
[pid 16412] close(3)                    = 0
[pid 16412] write(1, "executing program\n", 18executing program
) = 18
[pid 16412] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16412] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16412] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16412] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16412] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16412] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16412] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16413 attached
 <unfinished ...>
[pid 16413] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16413] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16413] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16412] <... clone3 resumed> => {parent_tid=[16413]}, 88) = 16413
[pid 16412] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16413] <... futex resumed>)        = 0
[pid 16412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16413] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16413] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16412] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16413] <... futex resumed>)        = 0
[pid 16413] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16413] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16412] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16413] <... futex resumed>)        = 0
[pid 16413] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16413] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16412] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16413] <... futex resumed>)        = 0
[pid 16412] <... futex resumed>)        = 1
[pid 16413] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16412] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16413] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16413] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16412] <... futex resumed>)        = 0
[pid 16413] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16412] exit_group(0)               = ?
[pid 16413] <... futex resumed>)        = ?
[pid 16413] +++ exited with 0 +++
[pid 16412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16414 attached
, child_tidptr=0x55557060c690) = 16414
[pid 16414] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16414] setpgid(0, 0)               = 0
[pid 16414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16414] write(3, "1000", 4)         = 4
executing program
[pid 16414] close(3)                    = 0
[pid 16414] write(1, "executing program\n", 18) = 18
[pid 16414] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16414] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16414] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16414] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16414] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16414] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16414] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16415]}, 88) = 16415
[pid 16414] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16415 attached
 <unfinished ...>
[pid 16415] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16415] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16415] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16414] <... futex resumed>)        = 0
[pid 16414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16415] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16414] <... futex resumed>)        = 0
[pid 16414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16415] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16414] <... futex resumed>)        = 0
[pid 16414] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16414] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16415] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16415] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16414] <... futex resumed>)        = 0
[pid 16414] exit_group(0 <unfinished ...>
[pid 16415] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16414] <... exit_group resumed>)   = ?
[pid 16415] <... futex resumed>)        = ?
[pid 16415] +++ exited with 0 +++
[pid 16414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16416
./strace-static-x86_64: Process 16416 attached
[pid 16416] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16416] setpgid(0, 0)               = 0
[pid 16416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16416] write(3, "1000", 4)         = 4
[pid 16416] close(3)                    = 0
[pid 16416] write(1, "executing program\n", 18executing program
) = 18
[pid 16416] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16416] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16416] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16416] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16416] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16416] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16416] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16417 attached
 => {parent_tid=[16417]}, 88) = 16417
[pid 16417] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16417] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16417] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16416] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16417] <... futex resumed>)        = 0
[pid 16417] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16417] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16417] <... futex resumed>)        = 0
[pid 16417] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16417] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16417] <... futex resumed>)        = 0
[pid 16417] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16417] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16416] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16417] <... futex resumed>)        = 0
[pid 16417] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16417] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16417] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16416] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16416] exit_group(0)               = ?
[pid 16417] <... futex resumed>)        = ?
[pid 16417] +++ exited with 0 +++
[pid 16416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16418
./strace-static-x86_64: Process 16418 attached
[pid 16418] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16418] setpgid(0, 0)               = 0
[pid 16418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16418] write(3, "1000", 4)         = 4
[pid 16418] close(3)                    = 0
executing program
[pid 16418] write(1, "executing program\n", 18) = 18
[pid 16418] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16418] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16418] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16418] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16418] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16418] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16418] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16419]}, 88) = 16419
[pid 16418] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16419 attached
 <unfinished ...>
[pid 16419] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16419] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16419] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16418] <... futex resumed>)        = 0
[pid 16418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16419] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16418] <... futex resumed>)        = 0
[pid 16418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16419] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16418] <... futex resumed>)        = 0
[pid 16418] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16418] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16419] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16419] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16418] <... futex resumed>)        = 0
[pid 16418] exit_group(0)               = ?
[pid 16419] +++ exited with 0 +++
[pid 16418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16420
./strace-static-x86_64: Process 16420 attached
[pid 16420] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16420] setpgid(0, 0)               = 0
[pid 16420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16420] write(3, "1000", 4)         = 4
[pid 16420] close(3)                    = 0
[pid 16420] write(1, "executing program\n", 18executing program
) = 18
[pid 16420] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16420] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16420] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16420] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16421 attached
 => {parent_tid=[16421]}, 88) = 16421
[pid 16421] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16421] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16421] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16421] <... futex resumed>)        = 0
[pid 16420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16421] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16421] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16420] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16421] <... futex resumed>)        = 0
[pid 16421] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16421] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16421] <... futex resumed>)        = 0
[pid 16421] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16421] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16420] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16421] <... futex resumed>)        = 0
[pid 16420] <... futex resumed>)        = 1
[pid 16421] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16421] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16421] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16420] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16420] exit_group(0)               = ?
[pid 16421] <... futex resumed>)        = ?
[pid 16421] +++ exited with 0 +++
[pid 16420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16422 attached
, child_tidptr=0x55557060c690) = 16422
[pid 16422] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16422] setpgid(0, 0)               = 0
[pid 16422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16422] write(3, "1000", 4)         = 4
[pid 16422] close(3)                    = 0
executing program
[pid 16422] write(1, "executing program\n", 18) = 18
[pid 16422] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16422] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16422] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16422] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16423 attached
 => {parent_tid=[16423]}, 88) = 16423
[pid 16422] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16423] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16423] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16423] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16422] <... futex resumed>)        = 0
[pid 16422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16423] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16422] <... futex resumed>)        = 0
[pid 16422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16423] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16422] <... futex resumed>)        = 0
[pid 16422] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16422] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16423] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16423] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16422] <... futex resumed>)        = 0
[pid 16422] exit_group(0)               = ?
[pid 16423] +++ exited with 0 +++
[pid 16422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16424
./strace-static-x86_64: Process 16424 attached
[pid 16424] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16424] setpgid(0, 0)               = 0
[pid 16424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16424] write(3, "1000", 4)         = 4
[pid 16424] close(3)                    = 0
[pid 16424] write(1, "executing program\n", 18executing program
) = 18
[pid 16424] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16424] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16424] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16424] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16424] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16425 attached
 => {parent_tid=[16425]}, 88) = 16425
[pid 16425] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16424] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16425] <... set_robust_list resumed>) = 0
[pid 16425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16425] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16424] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16425] <... futex resumed>)        = 0
[pid 16425] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16425] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16425] <... futex resumed>)        = 0
[pid 16425] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16425] <... futex resumed>)        = 0
[pid 16425] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16424] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16425] <... futex resumed>)        = 0
[pid 16425] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16425] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16424] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16425] <... futex resumed>)        = 0
[pid 16424] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16425] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16425] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16425] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16424] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16424] exit_group(0)               = ?
[pid 16425] <... futex resumed>)        = ?
[pid 16425] +++ exited with 0 +++
[pid 16424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16426 attached
, child_tidptr=0x55557060c690) = 16426
[pid 16426] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16426] setpgid(0, 0)               = 0
[pid 16426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16426] write(3, "1000", 4)         = 4
[pid 16426] close(3)                    = 0
executing program
[pid 16426] write(1, "executing program\n", 18) = 18
[pid 16426] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16426] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16426] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16426] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16426] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16427 attached
 => {parent_tid=[16427]}, 88) = 16427
[pid 16426] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16427] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16427] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16427] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16426] <... futex resumed>)        = 0
[pid 16426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16427] <... futex resumed>)        = 1
[pid 16426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16427] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16427] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16426] <... futex resumed>)        = 0
[pid 16426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16427] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16427] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16426] <... futex resumed>)        = 0
[pid 16426] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16426] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16427] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16427] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16427] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16426] <... futex resumed>)        = 0
[pid 16426] exit_group(0)               = ?
[pid 16427] <... futex resumed>)        = 231
[pid 16427] +++ exited with 0 +++
[pid 16426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16428 attached
, child_tidptr=0x55557060c690) = 16428
[pid 16428] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16428] setpgid(0, 0)               = 0
[pid 16428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16428] write(3, "1000", 4)         = 4
[pid 16428] close(3)                    = 0
[pid 16428] write(1, "executing program\n", 18executing program
) = 18
[pid 16428] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16428] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16428] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16428] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16428] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16428] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16428] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16429 attached
 => {parent_tid=[16429]}, 88) = 16429
[pid 16429] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16428] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16429] <... set_robust_list resumed>) = 0
[pid 16429] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16429] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16428] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16429] <... futex resumed>)        = 0
[pid 16429] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16429] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16429] <... futex resumed>)        = 0
[pid 16429] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16429] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16429] <... futex resumed>)        = 0
[pid 16429] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16429] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16428] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16428] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16429] <... futex resumed>)        = 0
[pid 16428] <... futex resumed>)        = 1
[pid 16429] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16428] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16429] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16429] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16429] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16428] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16428] exit_group(0)               = ?
[pid 16429] <... futex resumed>)        = ?
[pid 16429] +++ exited with 0 +++
[pid 16428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16430 attached
, child_tidptr=0x55557060c690) = 16430
[pid 16430] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16430] setpgid(0, 0)               = 0
[pid 16430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16430] write(3, "1000", 4)         = 4
[pid 16430] close(3)                    = 0
executing program
[pid 16430] write(1, "executing program\n", 18) = 18
[pid 16430] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16430] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16430] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16430] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16430] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16430] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16430] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16431 attached
 <unfinished ...>
[pid 16431] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16431] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16431] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16430] <... clone3 resumed> => {parent_tid=[16431]}, 88) = 16431
[pid 16430] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16431] <... futex resumed>)        = 0
[pid 16430] <... futex resumed>)        = 1
[pid 16431] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16431] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16431] <... futex resumed>)        = 0
[pid 16430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16431] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16431] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16430] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16431] <... futex resumed>)        = 0
[pid 16430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16431] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16431] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16430] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16430] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16431] <... futex resumed>)        = 0
[pid 16430] <... futex resumed>)        = 1
[pid 16430] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16431] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16431] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16430] <... futex resumed>)        = 0
[pid 16430] exit_group(0)               = ?
[pid 16431] +++ exited with 0 +++
[pid 16430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16432 attached
, child_tidptr=0x55557060c690) = 16432
[pid 16432] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16432] setpgid(0, 0)               = 0
[pid 16432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16432] write(3, "1000", 4)         = 4
executing program
[pid 16432] close(3)                    = 0
[pid 16432] write(1, "executing program\n", 18) = 18
[pid 16432] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16432] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16432] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16432] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16432] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16432] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16432] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16433 attached
 <unfinished ...>
[pid 16433] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16433] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16432] <... clone3 resumed> => {parent_tid=[16433]}, 88) = 16433
[pid 16432] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16433] <... futex resumed>)        = 0
[pid 16433] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16433] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16432] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16433] <... futex resumed>)        = 0
[pid 16432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16433] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16432] <... futex resumed>)        = 0
[pid 16433] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16433] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16432] <... futex resumed>)        = 0
[pid 16432] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16432] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16433] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16433] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16433] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16432] <... futex resumed>)        = 0
[pid 16432] exit_group(0)               = ?
[pid 16433] <... futex resumed>)        = ?
[pid 16433] +++ exited with 0 +++
[pid 16432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16434 attached
, child_tidptr=0x55557060c690) = 16434
[pid 16434] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16434] setpgid(0, 0)               = 0
[pid 16434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16434] write(3, "1000", 4)         = 4
executing program
[pid 16434] close(3)                    = 0
[pid 16434] write(1, "executing program\n", 18) = 18
[pid 16434] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16434] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16434] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16434] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16434] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16434] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16434] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16435 attached
 <unfinished ...>
[pid 16435] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16435] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16435] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16434] <... clone3 resumed> => {parent_tid=[16435]}, 88) = 16435
[pid 16434] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16435] <... futex resumed>)        = 0
[pid 16434] <... futex resumed>)        = 1
[pid 16435] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16435] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16435] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16434] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16435] <... futex resumed>)        = 0
[pid 16434] <... futex resumed>)        = 1
[pid 16435] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16435] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16434] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16435] <... futex resumed>)        = 0
[pid 16434] <... futex resumed>)        = 1
[pid 16435] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16435] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16434] <... futex resumed>)        = 0
[pid 16434] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16434] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16435] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16435] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16434] <... futex resumed>)        = 0
[pid 16434] exit_group(0)               = ?
[pid 16435] +++ exited with 0 +++
[pid 16434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16436 attached
, child_tidptr=0x55557060c690) = 16436
[pid 16436] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16436] setpgid(0, 0)               = 0
[pid 16436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16436] write(3, "1000", 4)         = 4
[pid 16436] close(3)                    = 0
[pid 16436] write(1, "executing program\n", 18executing program
) = 18
[pid 16436] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16436] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16436] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16436] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16436] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16436] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16436] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16437 attached
 => {parent_tid=[16437]}, 88) = 16437
[pid 16437] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16437] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16436] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16437] <... futex resumed>)        = 0
[pid 16436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16437] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16436] <... futex resumed>)        = 0
[pid 16436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16437] <... futex resumed>)        = 0
[pid 16437] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16437] <... futex resumed>)        = 0
[pid 16436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16437] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16436] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16436] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16437] <... futex resumed>)        = 0
[pid 16437] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16437] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16437] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16436] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16436] exit_group(0)               = ?
[pid 16437] <... futex resumed>)        = ?
[pid 16437] +++ exited with 0 +++
[pid 16436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16438 attached
, child_tidptr=0x55557060c690) = 16438
[pid 16438] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16438] setpgid(0, 0)               = 0
[pid 16438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16438] write(3, "1000", 4)         = 4
[pid 16438] close(3)                    = 0
executing program
[pid 16438] write(1, "executing program\n", 18) = 18
[pid 16438] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16438] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16438] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16438] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16438] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16438] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16438] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16439 attached
 <unfinished ...>
[pid 16439] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16439] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16438] <... clone3 resumed> => {parent_tid=[16439]}, 88) = 16439
[pid 16439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16438] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16439] <... futex resumed>)        = 0
[pid 16438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16439] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16438] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16439] <... futex resumed>)        = 0
[pid 16439] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16439] <... futex resumed>)        = 0
[pid 16438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16439] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16438] <... futex resumed>)        = 0
[pid 16438] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16439] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16438] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16439] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16439] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16438] <... futex resumed>)        = 0
[pid 16439] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16438] exit_group(0)               = ?
[pid 16439] <... futex resumed>)        = ?
[pid 16439] +++ exited with 0 +++
[pid 16438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16440 attached
, child_tidptr=0x55557060c690) = 16440
[pid 16440] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16440] setpgid(0, 0)               = 0
[pid 16440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16440] write(3, "1000", 4)         = 4
[pid 16440] close(3)                    = 0
executing program
[pid 16440] write(1, "executing program\n", 18) = 18
[pid 16440] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16440] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16440] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16440] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16440] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16440] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16440] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16441 attached
 => {parent_tid=[16441]}, 88) = 16441
[pid 16441] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16440] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16441] <... set_robust_list resumed>) = 0
[pid 16440] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16441] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16441] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16440] <... futex resumed>)        = 0
[pid 16441] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16441] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16440] <... futex resumed>)        = 0
[pid 16440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16441] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16440] <... futex resumed>)        = 0
[pid 16440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16441] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16440] <... futex resumed>)        = 0
[pid 16440] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16440] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16441] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16441] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16440] <... futex resumed>)        = 0
[pid 16440] exit_group(0)               = ?
[pid 16441] +++ exited with 0 +++
[pid 16440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16442
./strace-static-x86_64: Process 16442 attached
[pid 16442] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16442] setpgid(0, 0)               = 0
[pid 16442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16442] write(3, "1000", 4)         = 4
[pid 16442] close(3)                    = 0
[pid 16442] write(1, "executing program\n", 18executing program
) = 18
[pid 16442] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16442] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16442] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16442] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16442] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16442] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16442] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16443 attached
 => {parent_tid=[16443]}, 88) = 16443
[pid 16443] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16443] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16442] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16443] <... futex resumed>)        = 0
[pid 16442] <... futex resumed>)        = 1
[pid 16443] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16443] <... futex resumed>)        = 0
[pid 16443] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16443] <... futex resumed>)        = 0
[pid 16443] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16442] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16443] <... futex resumed>)        = 0
[pid 16443] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16443] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16443] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16442] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16442] exit_group(0)               = ?
[pid 16443] <... futex resumed>)        = ?
[pid 16443] +++ exited with 0 +++
[pid 16442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16444
./strace-static-x86_64: Process 16444 attached
[pid 16444] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16444] setpgid(0, 0)               = 0
[pid 16444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16444] write(3, "1000", 4)         = 4
[pid 16444] close(3executing program
)                    = 0
[pid 16444] write(1, "executing program\n", 18) = 18
[pid 16444] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16444] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16444] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16444] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16445 attached
 => {parent_tid=[16445]}, 88) = 16445
[pid 16445] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16445] <... futex resumed>)        = 0
[pid 16445] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16445] <... futex resumed>)        = 0
[pid 16444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16445] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16444] <... futex resumed>)        = 0
[pid 16445] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16445] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16444] <... futex resumed>)        = 0
[pid 16445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16445] <... futex resumed>)        = 0
[pid 16444] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16445] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16444] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16445] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16444] <... futex resumed>)        = 0
[pid 16445] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16444] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16445] <... futex resumed>)        = 0
[pid 16444] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16445] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16444] exit_group(0)               = ?
[pid 16445] <... futex resumed>)        = ?
[pid 16445] +++ exited with 0 +++
[pid 16444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16446 attached
, child_tidptr=0x55557060c690) = 16446
[pid 16446] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16446] setpgid(0, 0)               = 0
[pid 16446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16446] write(3, "1000", 4)         = 4
[pid 16446] close(3)                    = 0
[pid 16446] write(1, "executing program\n", 18executing program
) = 18
[pid 16446] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16446] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16446] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16446] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16446] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16447 attached
 => {parent_tid=[16447]}, 88) = 16447
[pid 16447] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16446] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16447] <... set_robust_list resumed>) = 0
[pid 16447] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16446] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16447] <... futex resumed>)        = 0
[pid 16447] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16447] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16446] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16447] <... futex resumed>)        = 0
[pid 16447] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16446] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16447] <... futex resumed>)        = 0
[pid 16447] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16447] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16446] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16447] <... futex resumed>)        = 0
[pid 16446] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16447] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16447] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16446] <... futex resumed>)        = 0
[pid 16446] exit_group(0)               = ?
[pid 16447] +++ exited with 0 +++
[pid 16446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16448
./strace-static-x86_64: Process 16448 attached
[pid 16448] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16448] setpgid(0, 0)               = 0
[pid 16448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16448] write(3, "1000", 4)         = 4
[pid 16448] close(3)                    = 0
executing program
[pid 16448] write(1, "executing program\n", 18) = 18
[pid 16448] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16448] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16448] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16448] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16449 attached
 => {parent_tid=[16449]}, 88) = 16449
[pid 16449] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16449] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16449] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16448] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16449] <... futex resumed>)        = 0
[pid 16449] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16449] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16449] <... futex resumed>)        = 0
[pid 16449] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16449] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16449] <... futex resumed>)        = 0
[pid 16449] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16448] <... futex resumed>)        = 0
[pid 16449] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16448] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16449] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16448] <... futex resumed>)        = 0
[pid 16449] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16448] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16449] <... futex resumed>)        = 0
[pid 16448] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16449] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16448] exit_group(0)               = ?
[pid 16449] <... futex resumed>)        = ?
[pid 16449] +++ exited with 0 +++
[pid 16448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16450
./strace-static-x86_64: Process 16450 attached
[pid 16450] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16450] setpgid(0, 0)               = 0
[pid 16450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16450] write(3, "1000", 4)         = 4
[pid 16450] close(3)                    = 0
[pid 16450] write(1, "executing program\n", 18executing program
) = 18
[pid 16450] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16450] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16450] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16450] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16450] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16450] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16450] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16451 attached
 => {parent_tid=[16451]}, 88) = 16451
[pid 16451] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16451] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16451] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16450] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16451] <... futex resumed>)        = 0
[pid 16451] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16451] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16451] <... futex resumed>)        = 0
[pid 16451] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16451] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16451] <... futex resumed>)        = 0
[pid 16451] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16451] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16450] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16451] <... futex resumed>)        = 0
[pid 16451] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16450] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16451] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16451] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16451] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16450] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16450] exit_group(0)               = ?
[pid 16451] <... futex resumed>)        = ?
[pid 16451] +++ exited with 0 +++
[pid 16450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16452 attached
, child_tidptr=0x55557060c690) = 16452
[pid 16452] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16452] setpgid(0, 0)               = 0
[pid 16452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16452] write(3, "1000", 4)         = 4
[pid 16452] close(3)                    = 0
executing program
[pid 16452] write(1, "executing program\n", 18) = 18
[pid 16452] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16452] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16452] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16452] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16452] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16452] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16452] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16453 attached
 <unfinished ...>
[pid 16453] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16452] <... clone3 resumed> => {parent_tid=[16453]}, 88) = 16453
[pid 16453] <... set_robust_list resumed>) = 0
[pid 16452] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16453] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16452] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16453] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16453] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16453] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16452] <... futex resumed>)        = 0
[pid 16452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16453] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16453] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16452] <... futex resumed>)        = 0
[pid 16452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16453] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16453] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16452] <... futex resumed>)        = 0
[pid 16452] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16452] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16453] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16453] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16453] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16452] <... futex resumed>)        = 0
[pid 16452] exit_group(0)               = ?
[pid 16453] <... futex resumed>)        = ?
[pid 16453] +++ exited with 0 +++
[pid 16452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16454
./strace-static-x86_64: Process 16454 attached
[pid 16454] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16454] setpgid(0, 0)               = 0
[pid 16454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16454] write(3, "1000", 4)         = 4
[pid 16454] close(3)                    = 0
[pid 16454] write(1, "executing program\n", 18executing program
) = 18
[pid 16454] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16454] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16454] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16454] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16454] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16454] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16454] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16455 attached
 => {parent_tid=[16455]}, 88) = 16455
[pid 16455] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16455] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16455] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16454] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16455] <... futex resumed>)        = 0
[pid 16455] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16455] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16455] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16454] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16455] <... futex resumed>)        = 0
[pid 16455] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16455] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16455] <... futex resumed>)        = 0
[pid 16455] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16455] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16454] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16455] <... futex resumed>)        = 0
[pid 16455] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16455] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16455] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16454] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16454] exit_group(0)               = ?
[pid 16455] <... futex resumed>)        = ?
[pid 16455] +++ exited with 0 +++
[pid 16454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16456
./strace-static-x86_64: Process 16456 attached
[pid 16456] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16456] setpgid(0, 0)               = 0
[pid 16456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16456] write(3, "1000", 4)         = 4
[pid 16456] close(3executing program
)                    = 0
[pid 16456] write(1, "executing program\n", 18) = 18
[pid 16456] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16456] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16456] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16456] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16456] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16456] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16456] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16457 attached
 => {parent_tid=[16457]}, 88) = 16457
[pid 16457] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16456] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16457] <... set_robust_list resumed>) = 0
[pid 16456] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16457] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16457] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16456] <... futex resumed>)        = 0
[pid 16457] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16457] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16456] <... futex resumed>)        = 0
[pid 16456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16457] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16456] <... futex resumed>)        = 0
[pid 16456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16457] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16457] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16456] <... futex resumed>)        = 0
[pid 16456] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16456] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16457] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16457] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16457] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16456] <... futex resumed>)        = 0
[pid 16456] exit_group(0)               = ?
[pid 16457] +++ exited with 0 +++
[pid 16456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16458
./strace-static-x86_64: Process 16458 attached
[pid 16458] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16458] setpgid(0, 0)               = 0
[pid 16458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16458] write(3, "1000", 4)         = 4
[pid 16458] close(3)                    = 0
[pid 16458] write(1, "executing program\n", 18executing program
) = 18
[pid 16458] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16458] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16458] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16458] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16458] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16458] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16458] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16459 attached
 => {parent_tid=[16459]}, 88) = 16459
[pid 16459] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16459] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16458] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16459] <... futex resumed>)        = 0
[pid 16459] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16459] <... futex resumed>)        = 0
[pid 16459] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16458] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16459] <... futex resumed>)        = 0
[pid 16459] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16458] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16459] <... futex resumed>)        = 0
[pid 16459] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16458] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16459] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16459] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16459] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16458] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16458] exit_group(0)               = ?
[pid 16459] <... futex resumed>)        = ?
[pid 16459] +++ exited with 0 +++
[pid 16458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16460 attached
, child_tidptr=0x55557060c690) = 16460
[pid 16460] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16460] setpgid(0, 0)               = 0
[pid 16460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16460] write(3, "1000", 4)         = 4
[pid 16460] close(3)                    = 0
executing program
[pid 16460] write(1, "executing program\n", 18) = 18
[pid 16460] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16460] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16460] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16460] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16460] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16460] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16460] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16461 attached
 <unfinished ...>
[pid 16461] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16460] <... clone3 resumed> => {parent_tid=[16461]}, 88) = 16461
[pid 16461] <... set_robust_list resumed>) = 0
[pid 16461] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16461] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16460] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16461] <... futex resumed>)        = 0
[pid 16460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16461] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16461] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16460] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16461] <... futex resumed>)        = 0
[pid 16460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16461] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16460] <... futex resumed>)        = 0
[pid 16461] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16461] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16460] <... futex resumed>)        = 0
[pid 16460] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16460] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16461] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16461] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16460] <... futex resumed>)        = 0
[pid 16461] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16460] exit_group(0)               = ?
[pid 16461] <... futex resumed>)        = ?
[pid 16461] +++ exited with 0 +++
[pid 16460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16462
./strace-static-x86_64: Process 16462 attached
[pid 16462] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16462] setpgid(0, 0)               = 0
[pid 16462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16462] write(3, "1000", 4)         = 4
[pid 16462] close(3)                    = 0
[pid 16462] write(1, "executing program\n", 18executing program
) = 18
[pid 16462] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16462] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16462] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16462] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16463 attached
 => {parent_tid=[16463]}, 88) = 16463
[pid 16463] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16463] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16463] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16463] <... futex resumed>)        = 0
[pid 16463] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16463] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16463] <... futex resumed>)        = 0
[pid 16463] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16463] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16463] <... futex resumed>)        = 0
[pid 16463] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16463] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16462] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16463] <... futex resumed>)        = 0
[pid 16463] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16462] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16463] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16463] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16463] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16462] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16462] exit_group(0)               = ?
[pid 16463] <... futex resumed>)        = ?
[pid 16463] +++ exited with 0 +++
[pid 16462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16464 attached
, child_tidptr=0x55557060c690) = 16464
[pid 16464] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16464] setpgid(0, 0)               = 0
[pid 16464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16464] write(3, "1000", 4)         = 4
executing program
[pid 16464] close(3)                    = 0
[pid 16464] write(1, "executing program\n", 18) = 18
[pid 16464] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16464] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16464] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16464] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16465 attached
 => {parent_tid=[16465]}, 88) = 16465
[pid 16465] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16464] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16465] <... set_robust_list resumed>) = 0
[pid 16464] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16464] <... futex resumed>)        = 0
[pid 16465] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16465] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16464] <... futex resumed>)        = 0
[pid 16464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16465] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16464] <... futex resumed>)        = 0
[pid 16464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16465] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16464] <... futex resumed>)        = 0
[pid 16464] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16464] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16465] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16465] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16464] <... futex resumed>)        = 0
[pid 16464] exit_group(0)               = ?
[pid 16465] +++ exited with 0 +++
[pid 16464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16466
./strace-static-x86_64: Process 16466 attached
[pid 16466] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16466] setpgid(0, 0)               = 0
[pid 16466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16466] write(3, "1000", 4)         = 4
[pid 16466] close(3)                    = 0
executing program
[pid 16466] write(1, "executing program\n", 18) = 18
[pid 16466] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16466] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16466] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16466] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16466] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16467]}, 88) = 16467
[pid 16466] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16467 attached
 <unfinished ...>
[pid 16467] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16467] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16467] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16466] <... futex resumed>)        = 0
[pid 16466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16467] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16466] <... futex resumed>)        = 0
[pid 16466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16467] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16466] <... futex resumed>)        = 0
[pid 16466] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16466] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16467] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16467] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16466] <... futex resumed>)        = 0
[pid 16466] exit_group(0)               = ?
[pid 16467] +++ exited with 0 +++
[pid 16466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16468
./strace-static-x86_64: Process 16468 attached
[pid 16468] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16468] setpgid(0, 0)               = 0
[pid 16468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16468] write(3, "1000", 4)         = 4
[pid 16468] close(3)                    = 0
[pid 16468] write(1, "executing program\n", 18executing program
) = 18
[pid 16468] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16468] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16468] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16468] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16468] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16468] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16468] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16469 attached
 => {parent_tid=[16469]}, 88) = 16469
[pid 16469] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16469] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16468] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16469] <... futex resumed>)        = 0
[pid 16468] <... futex resumed>)        = 1
[pid 16469] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16469] <... futex resumed>)        = 0
[pid 16469] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16469] <... futex resumed>)        = 0
[pid 16468] <... futex resumed>)        = 1
[pid 16469] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16469] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16468] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16468] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16469] <... futex resumed>)        = 0
[pid 16468] <... futex resumed>)        = 1
[pid 16468] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16469] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16469] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16469] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16468] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16468] exit_group(0)               = ?
[pid 16469] <... futex resumed>)        = ?
[pid 16469] +++ exited with 0 +++
[pid 16468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16470 attached
, child_tidptr=0x55557060c690) = 16470
[pid 16470] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16470] setpgid(0, 0)               = 0
[pid 16470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16470] write(3, "1000", 4)         = 4
[pid 16470] close(3)                    = 0
[pid 16470] write(1, "executing program\n", 18executing program
) = 18
[pid 16470] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16470] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16470] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16470] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16470] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16470] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16470] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16471]}, 88) = 16471
[pid 16470] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16471 attached
 <unfinished ...>
[pid 16471] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16471] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16471] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16470] <... futex resumed>)        = 0
[pid 16470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16471] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16470] <... futex resumed>)        = 0
[pid 16470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16471] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16470] <... futex resumed>)        = 0
[pid 16470] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16470] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16471] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16471] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16470] <... futex resumed>)        = 0
[pid 16470] exit_group(0)               = ?
[pid 16471] +++ exited with 0 +++
[pid 16470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16472 attached
, child_tidptr=0x55557060c690) = 16472
[pid 16472] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16472] setpgid(0, 0)               = 0
[pid 16472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16472] write(3, "1000", 4)         = 4
[pid 16472] close(3)                    = 0
[pid 16472] write(1, "executing program\n", 18executing program
) = 18
[pid 16472] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16472] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16472] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16472] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16472] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16472] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16472] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16473 attached
 => {parent_tid=[16473]}, 88) = 16473
[pid 16473] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16473] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16472] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16473] <... futex resumed>)        = 0
[pid 16473] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16473] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16472] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16473] <... futex resumed>)        = 0
[pid 16473] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16473] <... futex resumed>)        = 0
[pid 16473] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16472] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16473] <... futex resumed>)        = 0
[pid 16473] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16473] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16473] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16472] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16472] exit_group(0)               = ?
[pid 16473] <... futex resumed>)        = ?
[pid 16473] +++ exited with 0 +++
[pid 16472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16474 attached
, child_tidptr=0x55557060c690) = 16474
[pid 16474] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16474] setpgid(0, 0)               = 0
[pid 16474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16474] write(3, "1000", 4)         = 4
executing program
[pid 16474] close(3)                    = 0
[pid 16474] write(1, "executing program\n", 18) = 18
[pid 16474] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16474] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16474] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16474] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16474] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16474] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16474] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16475 attached
 <unfinished ...>
[pid 16475] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16474] <... clone3 resumed> => {parent_tid=[16475]}, 88) = 16475
[pid 16475] <... set_robust_list resumed>) = 0
[pid 16475] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16475] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16474] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16475] <... futex resumed>)        = 0
[pid 16474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16475] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16475] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16474] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16475] <... futex resumed>)        = 0
[pid 16475] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16475] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16474] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16475] <... futex resumed>)        = 0
[pid 16474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16475] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16474] <... futex resumed>)        = 0
[pid 16475] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16474] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16475] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16475] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16474] <... futex resumed>)        = 0
[pid 16475] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16474] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16474] exit_group(0)               = ?
[pid 16475] <... futex resumed>)        = ?
[pid 16475] +++ exited with 0 +++
[pid 16474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16476
./strace-static-x86_64: Process 16476 attached
[pid 16476] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16476] setpgid(0, 0)               = 0
[pid 16476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16476] write(3, "1000", 4)         = 4
[pid 16476] close(3)                    = 0
[pid 16476] write(1, "executing program\n", 18executing program
) = 18
[pid 16476] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16476] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16476] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16476] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16476] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16476] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16476] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16477 attached
 => {parent_tid=[16477]}, 88) = 16477
[pid 16477] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16477] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16477] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16476] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16477] <... futex resumed>)        = 0
[pid 16477] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16477] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16477] <... futex resumed>)        = 0
[pid 16477] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16477] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16477] <... futex resumed>)        = 0
[pid 16476] <... futex resumed>)        = 1
[pid 16477] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16477] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16477] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16476] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16476] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16477] <... futex resumed>)        = 0
[pid 16476] <... futex resumed>)        = 1
[pid 16476] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16477] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16477] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16477] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16476] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16476] exit_group(0)               = ?
[pid 16477] <... futex resumed>)        = ?
[pid 16477] +++ exited with 0 +++
[pid 16476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16478 attached
, child_tidptr=0x55557060c690) = 16478
[pid 16478] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16478] setpgid(0, 0)               = 0
[pid 16478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16478] write(3, "1000", 4)         = 4
executing program
[pid 16478] close(3)                    = 0
[pid 16478] write(1, "executing program\n", 18) = 18
[pid 16478] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16478] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16478] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16478] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16478] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16478] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16478] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16479 attached
 <unfinished ...>
[pid 16479] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16478] <... clone3 resumed> => {parent_tid=[16479]}, 88) = 16479
[pid 16479] <... set_robust_list resumed>) = 0
[pid 16479] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16478] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16479] <... futex resumed>)        = 0
[pid 16478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16479] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16478] <... futex resumed>)        = 0
[pid 16478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16479] <... futex resumed>)        = 0
[pid 16478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16479] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16478] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16479] <... futex resumed>)        = 0
[pid 16478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16479] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16478] <... futex resumed>)        = 0
[pid 16478] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16478] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16479] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16479] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16478] <... futex resumed>)        = 0
[pid 16479] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16478] exit_group(0)               = ?
[pid 16479] <... futex resumed>)        = ?
[pid 16479] +++ exited with 0 +++
[pid 16478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16480
./strace-static-x86_64: Process 16480 attached
[pid 16480] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16480] setpgid(0, 0)               = 0
[pid 16480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16480] write(3, "1000", 4)         = 4
[pid 16480] close(3)                    = 0
[pid 16480] write(1, "executing program\n", 18executing program
) = 18
[pid 16480] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16480] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16480] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16480] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16480] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16480] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16480] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16481 attached
 => {parent_tid=[16481]}, 88) = 16481
[pid 16481] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16481] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16481] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16480] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16481] <... futex resumed>)        = 0
[pid 16481] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16481] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16481] <... futex resumed>)        = 0
[pid 16481] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16481] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16481] <... futex resumed>)        = 0
[pid 16481] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16481] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16480] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16481] <... futex resumed>)        = 0
[pid 16481] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16481] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16481] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16480] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16480] exit_group(0)               = ?
[pid 16481] <... futex resumed>)        = ?
[pid 16481] +++ exited with 0 +++
[pid 16480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16482 attached
, child_tidptr=0x55557060c690) = 16482
[pid 16482] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16482] setpgid(0, 0)               = 0
[pid 16482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16482] write(3, "1000", 4)         = 4
[pid 16482] close(3)                    = 0
[pid 16482] write(1, "executing program\n", 18executing program
) = 18
[pid 16482] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16482] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16482] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16482] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16482] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16482] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16483]}, 88) = 16483
[pid 16482] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16483 attached
 <unfinished ...>
[pid 16483] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16483] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16483] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16482] <... futex resumed>)        = 0
[pid 16482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16483] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16482] <... futex resumed>)        = 0
[pid 16482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16483] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16482] <... futex resumed>)        = 0
[pid 16482] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16482] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16483] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16483] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16482] <... futex resumed>)        = 0
[pid 16482] exit_group(0)               = ?
[pid 16483] +++ exited with 0 +++
[pid 16482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16484 attached
, child_tidptr=0x55557060c690) = 16484
[pid 16484] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16484] setpgid(0, 0)               = 0
[pid 16484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16484] write(3, "1000", 4)         = 4
[pid 16484] close(3)                    = 0
[pid 16484] write(1, "executing program\n", 18executing program
) = 18
[pid 16484] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16484] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16484] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16484] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16485 attached
 => {parent_tid=[16485]}, 88) = 16485
[pid 16485] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16485] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16485] <... futex resumed>)        = 0
[pid 16485] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16485] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16485] <... futex resumed>)        = 0
[pid 16485] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16485] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16485] <... futex resumed>)        = 0
[pid 16484] <... futex resumed>)        = 1
[pid 16485] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16485] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16484] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16485] <... futex resumed>)        = 0
[pid 16485] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16484] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16485] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16485] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16485] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16484] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16484] exit_group(0)               = ?
[pid 16485] <... futex resumed>)        = ?
[pid 16485] +++ exited with 0 +++
[pid 16484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16486 attached
, child_tidptr=0x55557060c690) = 16486
[pid 16486] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16486] setpgid(0, 0)               = 0
[pid 16486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16486] write(3, "1000", 4)         = 4
executing program
[pid 16486] close(3)                    = 0
[pid 16486] write(1, "executing program\n", 18) = 18
[pid 16486] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16486] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16486] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16486] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16486] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16486] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16486] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16487 attached
 <unfinished ...>
[pid 16487] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16487] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16486] <... clone3 resumed> => {parent_tid=[16487]}, 88) = 16487
[pid 16486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16487] <... futex resumed>)        = 0
[pid 16487] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16487] <... futex resumed>)        = 0
[pid 16486] <... futex resumed>)        = 1
[pid 16487] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16487] <... futex resumed>)        = 0
[pid 16487] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16486] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16487] <... futex resumed>)        = 0
[pid 16486] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16487] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16487] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16486] <... futex resumed>)        = 0
[pid 16487] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16486] exit_group(0)               = ?
[pid 16487] <... futex resumed>)        = ?
[pid 16487] +++ exited with 0 +++
[pid 16486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16488
./strace-static-x86_64: Process 16488 attached
executing program
[pid 16488] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16488] setpgid(0, 0)               = 0
[pid 16488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16488] write(3, "1000", 4)         = 4
[pid 16488] close(3)                    = 0
[pid 16488] write(1, "executing program\n", 18) = 18
[pid 16488] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16488] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16488] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16488] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16488] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16488] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16488] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16489 attached
 <unfinished ...>
[pid 16489] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16489] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16489] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16488] <... clone3 resumed> => {parent_tid=[16489]}, 88) = 16489
[pid 16488] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16489] <... futex resumed>)        = 0
[pid 16489] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16489] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16489] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16488] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16489] <... futex resumed>)        = 0
[pid 16489] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16489] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16488] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16489] <... futex resumed>)        = 0
[pid 16488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16489] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16488] <... futex resumed>)        = 0
[pid 16488] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16488] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16489] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16489] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16488] <... futex resumed>)        = 0
[pid 16489] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16488] exit_group(0)               = ?
[pid 16489] <... futex resumed>)        = ?
[pid 16489] +++ exited with 0 +++
[pid 16488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16490
./strace-static-x86_64: Process 16490 attached
[pid 16490] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16490] setpgid(0, 0)               = 0
[pid 16490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16490] write(3, "1000", 4)         = 4
[pid 16490] close(3)                    = 0
executing program
[pid 16490] write(1, "executing program\n", 18) = 18
[pid 16490] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16490] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16490] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16490] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16490] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16490] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16490] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16491 attached
 <unfinished ...>
[pid 16491] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16491] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16491] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16490] <... clone3 resumed> => {parent_tid=[16491]}, 88) = 16491
[pid 16490] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16491] <... futex resumed>)        = 0
[pid 16491] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16491] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16491] <... futex resumed>)        = 0
[pid 16491] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16491] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16491] <... futex resumed>)        = 0
[pid 16490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16491] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16490] <... futex resumed>)        = 0
[pid 16490] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16490] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16491] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16491] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16490] <... futex resumed>)        = 0
[pid 16491] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16490] exit_group(0)               = ?
[pid 16491] <... futex resumed>)        = ?
[pid 16491] +++ exited with 0 +++
[pid 16490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16492 attached
, child_tidptr=0x55557060c690) = 16492
[pid 16492] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16492] setpgid(0, 0)               = 0
[pid 16492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16492] write(3, "1000", 4)         = 4
[pid 16492] close(3)                    = 0
executing program
[pid 16492] write(1, "executing program\n", 18) = 18
[pid 16492] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16492] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16492] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16492] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16492] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16492] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16492] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16493 attached
 => {parent_tid=[16493]}, 88) = 16493
[pid 16492] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16493] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16493] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16493] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16493] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16492] <... futex resumed>)        = 0
[pid 16492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16493] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16493] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16492] <... futex resumed>)        = 0
[pid 16492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16493] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16493] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16492] <... futex resumed>)        = 0
[pid 16492] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16493] <... futex resumed>)        = 0
[pid 16492] <... futex resumed>)        = 1
[pid 16492] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16493] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16493] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16492] <... futex resumed>)        = 0
[pid 16493] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16492] exit_group(0)               = ?
[pid 16493] <... futex resumed>)        = ?
[pid 16493] +++ exited with 0 +++
[pid 16492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16494
./strace-static-x86_64: Process 16494 attached
[pid 16494] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16494] setpgid(0, 0)               = 0
[pid 16494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16494] write(3, "1000", 4)         = 4
[pid 16494] close(3)                    = 0
[pid 16494] write(1, "executing program\n", 18executing program
) = 18
[pid 16494] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16494] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16494] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16494] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16494] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16494] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16494] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16495 attached
 => {parent_tid=[16495]}, 88) = 16495
[pid 16495] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16495] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16494] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16495] <... futex resumed>)        = 0
[pid 16495] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16495] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16495] <... futex resumed>)        = 0
[pid 16495] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16495] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16495] <... futex resumed>)        = 0
[pid 16494] <... futex resumed>)        = 1
[pid 16495] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16495] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16494] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16495] <... futex resumed>)        = 0
[pid 16495] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16495] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16495] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16494] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16494] exit_group(0)               = ?
[pid 16495] <... futex resumed>)        = ?
[pid 16495] +++ exited with 0 +++
[pid 16494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16496 attached
, child_tidptr=0x55557060c690) = 16496
[pid 16496] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16496] setpgid(0, 0)               = 0
[pid 16496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16496] write(3, "1000", 4)         = 4
[pid 16496] close(3)                    = 0
[pid 16496] write(1, "executing program\n", 18executing program
) = 18
[pid 16496] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16496] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16496] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16496] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16496] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16496] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16496] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16497]}, 88) = 16497
[pid 16496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16497 attached
 <unfinished ...>
[pid 16497] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16497] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16497] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16496] <... futex resumed>)        = 0
[pid 16496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16497] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16496] <... futex resumed>)        = 0
[pid 16496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16497] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16496] <... futex resumed>)        = 0
[pid 16496] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16496] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16497] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16497] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16496] <... futex resumed>)        = 0
[pid 16496] exit_group(0)               = ?
[pid 16497] +++ exited with 0 +++
[pid 16496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16498
./strace-static-x86_64: Process 16498 attached
[pid 16498] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16498] setpgid(0, 0)               = 0
[pid 16498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16498] write(3, "1000", 4)         = 4
[pid 16498] close(3)                    = 0
[pid 16498] write(1, "executing program\n", 18executing program
) = 18
[pid 16498] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16498] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16498] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16498] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16498] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16498] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16498] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16499 attached
 => {parent_tid=[16499]}, 88) = 16499
[pid 16499] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16498] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16499] <... futex resumed>)        = 0
[pid 16498] <... futex resumed>)        = 1
[pid 16499] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16499] <... futex resumed>)        = 0
[pid 16499] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16499] <... futex resumed>)        = 0
[pid 16499] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16499] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16498] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16498] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16499] <... futex resumed>)        = 0
[pid 16499] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16498] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16499] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16499] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16499] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16498] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16498] exit_group(0)               = ?
[pid 16499] <... futex resumed>)        = ?
[pid 16499] +++ exited with 0 +++
[pid 16498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16500 attached
, child_tidptr=0x55557060c690) = 16500
[pid 16500] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16500] setpgid(0, 0)               = 0
[pid 16500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16500] write(3, "1000", 4)         = 4
executing program
[pid 16500] close(3)                    = 0
[pid 16500] write(1, "executing program\n", 18) = 18
[pid 16500] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16500] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16500] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16500] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16501]}, 88) = 16501
[pid 16500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16501 attached
 <unfinished ...>
[pid 16501] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16501] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16500] <... futex resumed>)        = 0
[pid 16500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16501] <... futex resumed>)        = 1
[pid 16501] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16500] <... futex resumed>)        = 0
[pid 16500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16501] <... futex resumed>)        = 1
[pid 16501] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16500] <... futex resumed>)        = 0
[pid 16500] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16500] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16501] <... futex resumed>)        = 1
[pid 16501] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16501] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16500] <... futex resumed>)        = 0
[pid 16500] exit_group(0)               = ?
[pid 16501] <... futex resumed>)        = ?
[pid 16501] +++ exited with 0 +++
[pid 16500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16502
./strace-static-x86_64: Process 16502 attached
[pid 16502] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16502] setpgid(0, 0)               = 0
[pid 16502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16502] write(3, "1000", 4)         = 4
[pid 16502] close(3)                    = 0
[pid 16502] write(1, "executing program\n", 18executing program
) = 18
[pid 16502] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16502] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16502] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16502] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16502] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16502] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16502] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16503]}, 88) = 16503
[pid 16502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16503 attached
 <unfinished ...>
[pid 16503] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16503] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16503] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16502] <... futex resumed>)        = 0
[pid 16502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16503] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16502] <... futex resumed>)        = 0
[pid 16502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16503] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16502] <... futex resumed>)        = 0
[pid 16502] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16502] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16503] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16503] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16502] <... futex resumed>)        = 0
[pid 16502] exit_group(0)               = ?
[pid 16503] +++ exited with 0 +++
[pid 16502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16504
./strace-static-x86_64: Process 16504 attached
[pid 16504] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16504] setpgid(0, 0)               = 0
[pid 16504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16504] write(3, "1000", 4)         = 4
[pid 16504] close(3)                    = 0
[pid 16504] write(1, "executing program\n", 18executing program
) = 18
[pid 16504] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16504] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16504] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16504] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16505 attached
 => {parent_tid=[16505]}, 88) = 16505
[pid 16505] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16505] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16505] <... futex resumed>)        = 0
[pid 16504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16505] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16505] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16505] <... futex resumed>)        = 0
[pid 16505] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16505] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16505] <... futex resumed>)        = 0
[pid 16505] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16505] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16504] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16505] <... futex resumed>)        = 0
[pid 16504] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16505] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16505] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16505] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16504] exit_group(0)               = ?
[pid 16505] <... futex resumed>)        = ?
[pid 16505] +++ exited with 0 +++
[pid 16504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16506 attached
, child_tidptr=0x55557060c690) = 16506
[pid 16506] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16506] setpgid(0, 0)               = 0
[pid 16506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16506] write(3, "1000", 4)         = 4
[pid 16506] close(3)                    = 0
executing program
[pid 16506] write(1, "executing program\n", 18) = 18
[pid 16506] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16506] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16506] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16506] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16506] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16506] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16506] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16507 attached
 <unfinished ...>
[pid 16507] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16506] <... clone3 resumed> => {parent_tid=[16507]}, 88) = 16507
[pid 16506] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16507] <... set_robust_list resumed>) = 0
[pid 16507] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16507] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16507] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16506] <... futex resumed>)        = 0
[pid 16506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16507] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16507] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16506] <... futex resumed>)        = 0
[pid 16506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16507] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16506] <... futex resumed>)        = 0
[pid 16506] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16506] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16507] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16507] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16506] <... futex resumed>)        = 0
[pid 16506] exit_group(0)               = ?
[pid 16507] +++ exited with 0 +++
[pid 16506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16508
./strace-static-x86_64: Process 16508 attached
[pid 16508] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16508] setpgid(0, 0)               = 0
[pid 16508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16508] write(3, "1000", 4)         = 4
[pid 16508] close(3)                    = 0
[pid 16508] write(1, "executing program\n", 18executing program
) = 18
[pid 16508] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16508] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16508] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16508] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16508] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16508] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16508] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16509 attached
 => {parent_tid=[16509]}, 88) = 16509
[pid 16509] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16508] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16509] <... futex resumed>)        = 0
[pid 16509] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16509] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16508] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16509] <... futex resumed>)        = 0
[pid 16509] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16509] <... futex resumed>)        = 0
[pid 16509] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16508] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16509] <... futex resumed>)        = 0
[pid 16508] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16509] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16509] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16509] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16508] <... futex resumed>)        = 0
[pid 16508] exit_group(0)               = ?
[pid 16509] <... futex resumed>)        = ?
[pid 16509] +++ exited with 0 +++
[pid 16508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16510 attached
, child_tidptr=0x55557060c690) = 16510
[pid 16510] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16510] setpgid(0, 0)               = 0
[pid 16510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16510] write(3, "1000", 4)         = 4
[pid 16510] close(3)                    = 0
executing program
[pid 16510] write(1, "executing program\n", 18) = 18
[pid 16510] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16510] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16510] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16510] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16510] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16510] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16510] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16511 attached
 <unfinished ...>
[pid 16511] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16510] <... clone3 resumed> => {parent_tid=[16511]}, 88) = 16511
[pid 16511] <... set_robust_list resumed>) = 0
[pid 16510] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16511] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16510] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16511] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16511] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16510] <... futex resumed>)        = 0
[pid 16510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16511] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16510] <... futex resumed>)        = 0
[pid 16510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16511] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16510] <... futex resumed>)        = 0
[pid 16510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16511] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16510] <... futex resumed>)        = 0
[pid 16510] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16510] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16511] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16511] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16510] <... futex resumed>)        = 0
[pid 16510] exit_group(0)               = ?
[pid 16511] +++ exited with 0 +++
[pid 16510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16512
./strace-static-x86_64: Process 16512 attached
[pid 16512] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16512] setpgid(0, 0)               = 0
[pid 16512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16512] write(3, "1000", 4)         = 4
[pid 16512] close(3)                    = 0
[pid 16512] write(1, "executing program\n", 18executing program
) = 18
[pid 16512] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16512] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16512] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16512] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16512] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16512] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16512] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16513 attached
 <unfinished ...>
[pid 16513] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16512] <... clone3 resumed> => {parent_tid=[16513]}, 88) = 16513
[pid 16512] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] <... futex resumed>)        = 0
[pid 16513] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] <... futex resumed>)        = 0
[pid 16513] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] <... futex resumed>)        = 0
[pid 16512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16513] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16512] <... futex resumed>)        = 0
[pid 16512] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] <... futex resumed>)        = 0
[pid 16512] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16513] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16513] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16513] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16512] <... futex resumed>)        = 0
[pid 16512] exit_group(0)               = ?
[pid 16513] <... futex resumed>)        = ?
[pid 16513] +++ exited with 0 +++
[pid 16512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16514
./strace-static-x86_64: Process 16514 attached
[pid 16514] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16514] setpgid(0, 0)               = 0
[pid 16514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16514] write(3, "1000", 4)         = 4
[pid 16514] close(3)                    = 0
[pid 16514] write(1, "executing program\n", 18executing program
) = 18
[pid 16514] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16514] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16514] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16514] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16514] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16514] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16514] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16515 attached
 => {parent_tid=[16515]}, 88) = 16515
[pid 16515] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16515] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16515] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16515] <... futex resumed>)        = 0
[pid 16515] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16515] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16515] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16514] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16515] <... futex resumed>)        = 0
[pid 16514] <... futex resumed>)        = 1
[pid 16515] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16515] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16515] <... futex resumed>)        = 0
[pid 16514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16515] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16515] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16514] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16514] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16515] <... futex resumed>)        = 0
[pid 16514] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16515] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16515] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16515] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16514] <... futex resumed>)        = 0
[pid 16514] exit_group(0)               = ?
[pid 16515] <... futex resumed>)        = ?
[pid 16515] +++ exited with 0 +++
[pid 16514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16516 attached
, child_tidptr=0x55557060c690) = 16516
[pid 16516] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16516] setpgid(0, 0)               = 0
[pid 16516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16516] write(3, "1000", 4)         = 4
[pid 16516] close(3)                    = 0
[pid 16516] write(1, "executing program\n", 18executing program
) = 18
[pid 16516] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16516] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16516] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16517]}, 88) = 16517
[pid 16516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16517 attached
 <unfinished ...>
[pid 16517] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16517] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16516] <... futex resumed>)        = 0
[pid 16516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16517] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16516] <... futex resumed>)        = 0
[pid 16516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16517] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16516] <... futex resumed>)        = 0
[pid 16516] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16516] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16517] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16517] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16516] <... futex resumed>)        = 0
[pid 16516] exit_group(0)               = ?
[pid 16517] +++ exited with 0 +++
[pid 16516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16518 attached
, child_tidptr=0x55557060c690) = 16518
[pid 16518] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16518] setpgid(0, 0)               = 0
[pid 16518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16518] write(3, "1000", 4)         = 4
[pid 16518] close(3)                    = 0
[pid 16518] write(1, "executing program\n", 18executing program
) = 18
[pid 16518] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16518] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16518] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16518] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16518] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16518] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16518] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16519 attached
 => {parent_tid=[16519]}, 88) = 16519
[pid 16519] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16519] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16518] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16519] <... futex resumed>)        = 0
[pid 16519] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16519] <... futex resumed>)        = 0
[pid 16519] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16519] <... futex resumed>)        = 0
[pid 16519] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16518] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16519] <... futex resumed>)        = 0
[pid 16519] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16518] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16519] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16519] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16519] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16518] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16518] exit_group(0)               = ?
[pid 16519] <... futex resumed>)        = ?
[pid 16519] +++ exited with 0 +++
[pid 16518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16520
./strace-static-x86_64: Process 16520 attached
[pid 16520] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16520] setpgid(0, 0)               = 0
[pid 16520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16520] write(3, "1000", 4)         = 4
[pid 16520] close(3)                    = 0
[pid 16520] write(1, "executing program\n", 18executing program
) = 18
[pid 16520] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16520] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16520] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16520] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16520] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16520] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16520] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16521]}, 88) = 16521
[pid 16520] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16521 attached
 <unfinished ...>
[pid 16521] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16521] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16521] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16520] <... futex resumed>)        = 0
[pid 16520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16521] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16520] <... futex resumed>)        = 0
[pid 16520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16521] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16520] <... futex resumed>)        = 0
[pid 16520] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16520] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16521] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16521] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16520] <... futex resumed>)        = 0
[pid 16520] exit_group(0)               = ?
[pid 16521] +++ exited with 0 +++
[pid 16520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16522 attached
, child_tidptr=0x55557060c690) = 16522
[pid 16522] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16522] setpgid(0, 0)               = 0
[pid 16522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16522] write(3, "1000", 4)         = 4
[pid 16522] close(3)                    = 0
[pid 16522] write(1, "executing program\n", 18executing program
) = 18
[pid 16522] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16522] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16522] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16522] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16522] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16522] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16522] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16523 attached
 => {parent_tid=[16523]}, 88) = 16523
[pid 16523] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16523] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16522] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16523] <... futex resumed>)        = 0
[pid 16523] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16523] <... futex resumed>)        = 0
[pid 16523] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16523] <... futex resumed>)        = 0
[pid 16523] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16522] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16522] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16523] <... futex resumed>)        = 0
[pid 16523] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16523] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16523] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16522] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16522] exit_group(0)               = ?
[pid 16523] <... futex resumed>)        = ?
[pid 16523] +++ exited with 0 +++
[pid 16522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16524
./strace-static-x86_64: Process 16524 attached
[pid 16524] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16524] setpgid(0, 0)               = 0
[pid 16524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16524] write(3, "1000", 4)         = 4
[pid 16524] close(3)                    = 0
[pid 16524] write(1, "executing program\n", 18executing program
) = 18
[pid 16524] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16524] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16524] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16524] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16524] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16524] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16524] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16525 attached
 => {parent_tid=[16525]}, 88) = 16525
[pid 16525] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16525] <... futex resumed>)        = 0
[pid 16525] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16525] <... futex resumed>)        = 0
[pid 16525] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16525] <... futex resumed>)        = 0
[pid 16525] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16524] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16525] <... futex resumed>)        = 0
[pid 16525] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16525] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16525] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16524] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16524] exit_group(0)               = ?
[pid 16525] <... futex resumed>)        = ?
[pid 16525] +++ exited with 0 +++
[pid 16524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16526 attached
, child_tidptr=0x55557060c690) = 16526
[pid 16526] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16526] setpgid(0, 0)               = 0
[pid 16526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16526] write(3, "1000", 4)         = 4
[pid 16526] close(3)                    = 0
[pid 16526] write(1, "executing program\n", 18executing program
) = 18
[pid 16526] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16526] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16526] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16526] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16526] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16526] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16526] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16527 attached
 <unfinished ...>
[pid 16527] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16527] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16526] <... clone3 resumed> => {parent_tid=[16527]}, 88) = 16527
[pid 16526] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16527] <... futex resumed>)        = 0
[pid 16527] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16527] <... futex resumed>)        = 0
[pid 16526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16527] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16527] <... futex resumed>)        = 0
[pid 16526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16527] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16526] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16527] <... futex resumed>)        = 0
[pid 16526] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16527] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16527] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16526] <... futex resumed>)        = 0
[pid 16527] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16526] exit_group(0)               = ?
[pid 16527] <... futex resumed>)        = ?
[pid 16527] +++ exited with 0 +++
[pid 16526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16528 attached
, child_tidptr=0x55557060c690) = 16528
[pid 16528] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16528] setpgid(0, 0)               = 0
[pid 16528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16528] write(3, "1000", 4)         = 4
[pid 16528] close(3)                    = 0
[pid 16528] write(1, "executing program\n", 18executing program
) = 18
[pid 16528] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16528] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16528] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16528] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16528] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16528] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16528] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16529 attached
 => {parent_tid=[16529]}, 88) = 16529
[pid 16529] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16529] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16529] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16528] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16529] <... futex resumed>)        = 0
[pid 16529] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16529] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16529] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16528] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16529] <... futex resumed>)        = 0
[pid 16529] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16528] <... futex resumed>)        = 0
[pid 16529] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16529] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16528] <... futex resumed>)        = 0
[pid 16528] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16528] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16529] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16529] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16528] <... futex resumed>)        = 0
[pid 16528] exit_group(0 <unfinished ...>
[pid 16529] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16528] <... exit_group resumed>)   = ?
[pid 16529] <... futex resumed>)        = ?
[pid 16529] +++ exited with 0 +++
[pid 16528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16530 attached
, child_tidptr=0x55557060c690) = 16530
[pid 16530] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16530] setpgid(0, 0)               = 0
[pid 16530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16530] write(3, "1000", 4)         = 4
[pid 16530] close(3)                    = 0
executing program
[pid 16530] write(1, "executing program\n", 18) = 18
[pid 16530] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16530] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16530] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16530] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16530] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16530] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16530] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16531]}, 88) = 16531
[pid 16530] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 16531 attached
NULL, 8) = 0
[pid 16531] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16531] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16530] <... futex resumed>)        = 0
[pid 16530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16531] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16530] <... futex resumed>)        = 0
[pid 16530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16531] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16530] <... futex resumed>)        = 0
[pid 16530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16531] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16530] <... futex resumed>)        = 0
[pid 16530] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16530] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16531] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16531] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16530] <... futex resumed>)        = 0
[pid 16530] exit_group(0)               = ?
[pid 16531] +++ exited with 0 +++
[pid 16530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16532
./strace-static-x86_64: Process 16532 attached
[pid 16532] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16532] setpgid(0, 0)               = 0
[pid 16532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16532] write(3, "1000", 4)         = 4
[pid 16532] close(3)                    = 0
[pid 16532] write(1, "executing program\n", 18executing program
) = 18
[pid 16532] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16532] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16532] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16532] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16532] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16532] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16532] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16533]}, 88) = 16533
[pid 16532] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16533 attached
 <unfinished ...>
[pid 16533] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16533] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16533] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16532] <... futex resumed>)        = 0
[pid 16532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16533] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16532] <... futex resumed>)        = 0
[pid 16532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16533] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16532] <... futex resumed>)        = 0
[pid 16532] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16532] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16533] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16533] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16532] <... futex resumed>)        = 0
[pid 16532] exit_group(0)               = ?
[pid 16533] +++ exited with 0 +++
[pid 16532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16534
./strace-static-x86_64: Process 16534 attached
[pid 16534] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16534] setpgid(0, 0)               = 0
[pid 16534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16534] write(3, "1000", 4)         = 4
[pid 16534] close(3)                    = 0
[pid 16534] write(1, "executing program\n", 18executing program
) = 18
[pid 16534] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16534] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16534] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16534] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16534] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16534] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16534] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16535 attached
 => {parent_tid=[16535]}, 88) = 16535
[pid 16535] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16535] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16534] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16535] <... futex resumed>)        = 0
[pid 16534] <... futex resumed>)        = 1
[pid 16535] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16535] <... futex resumed>)        = 0
[pid 16534] <... futex resumed>)        = 1
[pid 16535] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16535] <... futex resumed>)        = 0
[pid 16534] <... futex resumed>)        = 1
[pid 16535] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16534] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16535] <... futex resumed>)        = 0
[pid 16535] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16534] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16535] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16535] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16535] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16534] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16534] exit_group(0)               = ?
[pid 16535] <... futex resumed>)        = ?
[pid 16535] +++ exited with 0 +++
[pid 16534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16536 attached
, child_tidptr=0x55557060c690) = 16536
[pid 16536] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16536] setpgid(0, 0)               = 0
[pid 16536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16536] write(3, "1000", 4)         = 4
[pid 16536] close(3)                    = 0
[pid 16536] write(1, "executing program\n", 18executing program
) = 18
[pid 16536] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16536] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16536] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16536] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16536] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16536] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16536] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16537]}, 88) = 16537
[pid 16536] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16537 attached
 <unfinished ...>
[pid 16537] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16537] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16537] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16536] <... futex resumed>)        = 0
[pid 16536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16537] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16536] <... futex resumed>)        = 0
[pid 16536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16537] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16536] <... futex resumed>)        = 0
[pid 16536] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16536] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16537] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16537] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16536] <... futex resumed>)        = 0
[pid 16536] exit_group(0)               = ?
[pid 16537] +++ exited with 0 +++
[pid 16536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16538 attached
, child_tidptr=0x55557060c690) = 16538
[pid 16538] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16538] setpgid(0, 0)               = 0
[pid 16538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16538] write(3, "1000", 4)         = 4
[pid 16538] close(3)                    = 0
[pid 16538] write(1, "executing program\n", 18executing program
) = 18
[pid 16538] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16538] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16538] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16538] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16538] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16538] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16538] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16539 attached
 => {parent_tid=[16539]}, 88) = 16539
[pid 16539] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16539] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16538] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16539] <... futex resumed>)        = 0
[pid 16539] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16539] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16538] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16539] <... futex resumed>)        = 0
[pid 16539] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16539] <... futex resumed>)        = 0
[pid 16539] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16538] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16539] <... futex resumed>)        = 0
[pid 16538] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16539] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16539] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16538] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16539] <... futex resumed>)        = 0
[pid 16538] exit_group(0 <unfinished ...>
[pid 16539] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16538] <... exit_group resumed>)   = ?
[pid 16539] <... futex resumed>)        = ?
[pid 16539] +++ exited with 0 +++
[pid 16538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16540 attached
, child_tidptr=0x55557060c690) = 16540
[pid 16540] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16540] setpgid(0, 0)               = 0
[pid 16540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16540] write(3, "1000", 4)         = 4
[pid 16540] close(3)                    = 0
[pid 16540] write(1, "executing program\n", 18executing program
) = 18
[pid 16540] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16540] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16540] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16540] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16540] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16540] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16540] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16541]}, 88) = 16541
[pid 16540] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16541 attached
 <unfinished ...>
[pid 16541] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16541] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16541] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16540] <... futex resumed>)        = 0
[pid 16540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16541] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16540] <... futex resumed>)        = 0
[pid 16540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16541] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16540] <... futex resumed>)        = 0
[pid 16540] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16540] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16541] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16541] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16540] <... futex resumed>)        = 0
[pid 16540] exit_group(0)               = ?
[pid 16541] +++ exited with 0 +++
[pid 16540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16542 attached
, child_tidptr=0x55557060c690) = 16542
[pid 16542] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16542] setpgid(0, 0)               = 0
[pid 16542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16542] write(3, "1000", 4)         = 4
[pid 16542] close(3)                    = 0
[pid 16542] write(1, "executing program\n", 18executing program
) = 18
[pid 16542] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16542] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16542] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16542] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16542] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16542] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16542] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16543 attached
 => {parent_tid=[16543]}, 88) = 16543
[pid 16543] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16543] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16542] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16543] <... futex resumed>)        = 0
[pid 16543] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16543] <... futex resumed>)        = 0
[pid 16543] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16543] <... futex resumed>)        = 0
[pid 16543] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16542] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16543] <... futex resumed>)        = 0
[pid 16543] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16543] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16543] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16542] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16542] exit_group(0)               = ?
[pid 16543] <... futex resumed>)        = ?
[pid 16543] +++ exited with 0 +++
[pid 16542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16544
./strace-static-x86_64: Process 16544 attached
[pid 16544] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16544] setpgid(0, 0)               = 0
[pid 16544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16544] write(3, "1000", 4)         = 4
[pid 16544] close(3)                    = 0
[pid 16544] write(1, "executing program\n", 18executing program
) = 18
[pid 16544] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16544] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16544] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16544] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16544] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16544] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16544] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16545 attached
 => {parent_tid=[16545]}, 88) = 16545
[pid 16545] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16545] <... futex resumed>)        = 0
[pid 16545] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16545] <... futex resumed>)        = 0
[pid 16545] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16545] <... futex resumed>)        = 0
[pid 16545] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16544] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16545] <... futex resumed>)        = 0
[pid 16544] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16545] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16545] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16544] <... futex resumed>)        = 0
[pid 16545] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16544] exit_group(0)               = ?
[pid 16545] <... futex resumed>)        = ?
[pid 16545] +++ exited with 0 +++
[pid 16544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16546 attached
, child_tidptr=0x55557060c690) = 16546
[pid 16546] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16546] setpgid(0, 0)               = 0
[pid 16546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16546] write(3, "1000", 4)         = 4
[pid 16546] close(3executing program
)                    = 0
[pid 16546] write(1, "executing program\n", 18) = 18
[pid 16546] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16546] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16546] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16546] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16546] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16546] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16546] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16547 attached
 <unfinished ...>
[pid 16547] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16546] <... clone3 resumed> => {parent_tid=[16547]}, 88) = 16547
[pid 16547] <... set_robust_list resumed>) = 0
[pid 16547] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16547] <... futex resumed>)        = 0
[pid 16547] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16547] <... futex resumed>)        = 0
[pid 16547] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16547] <... futex resumed>)        = 0
[pid 16546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16547] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16546] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16547] <... futex resumed>)        = 0
[pid 16546] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16547] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16547] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16546] <... futex resumed>)        = 0
[pid 16547] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16546] exit_group(0)               = ?
[pid 16547] <... futex resumed>)        = ?
[pid 16547] +++ exited with 0 +++
[pid 16546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16548
./strace-static-x86_64: Process 16548 attached
[pid 16548] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16548] setpgid(0, 0)               = 0
[pid 16548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16548] write(3, "1000", 4)         = 4
[pid 16548] close(3)                    = 0
[pid 16548] write(1, "executing program\n", 18executing program
) = 18
[pid 16548] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16548] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16548] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16548] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16548] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16548] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16548] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16549 attached
 => {parent_tid=[16549]}, 88) = 16549
[pid 16549] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16549] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16548] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16549] <... futex resumed>)        = 0
[pid 16549] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16549] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16548] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16549] <... futex resumed>)        = 0
[pid 16549] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16549] <... futex resumed>)        = 0
[pid 16548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16549] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16548] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16548] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16549] <... futex resumed>)        = 0
[pid 16548] <... futex resumed>)        = 1
[pid 16549] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16548] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16549] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16549] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16549] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16548] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16548] exit_group(0)               = ?
[pid 16549] <... futex resumed>)        = ?
[pid 16549] +++ exited with 0 +++
[pid 16548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16550 attached
, child_tidptr=0x55557060c690) = 16550
[pid 16550] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16550] setpgid(0, 0)               = 0
[pid 16550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16550] write(3, "1000", 4)         = 4
[pid 16550] close(3)                    = 0
executing program
[pid 16550] write(1, "executing program\n", 18) = 18
[pid 16550] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16550] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16550] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16550] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16550] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16550] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16550] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16551 attached
 => {parent_tid=[16551]}, 88) = 16551
[pid 16550] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16551] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16551] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16551] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16550] <... futex resumed>)        = 0
[pid 16550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16551] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16550] <... futex resumed>)        = 0
[pid 16550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16551] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16551] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16550] <... futex resumed>)        = 0
[pid 16550] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16550] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16551] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16551] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16551] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16550] <... futex resumed>)        = 0
[pid 16550] exit_group(0)               = ?
[pid 16551] <... futex resumed>)        = ?
[pid 16551] +++ exited with 0 +++
[pid 16550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16552 attached
, child_tidptr=0x55557060c690) = 16552
[pid 16552] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16552] setpgid(0, 0)               = 0
[pid 16552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16552] write(3, "1000", 4)         = 4
[pid 16552] close(3)                    = 0
[pid 16552] write(1, "executing program\n", 18executing program
) = 18
[pid 16552] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16552] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16552] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16552] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16552] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16552] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16552] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16553 attached
 => {parent_tid=[16553]}, 88) = 16553
[pid 16553] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16553] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16553] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16552] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16553] <... futex resumed>)        = 0
[pid 16553] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16553] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16553] <... futex resumed>)        = 0
[pid 16553] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16553] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16552] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16553] <... futex resumed>)        = 0
[pid 16553] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16553] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16552] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16553] <... futex resumed>)        = 0
[pid 16553] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16552] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16553] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16553] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000executing program
) = 0
[pid 16553] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16552] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16552] exit_group(0)               = ?
[pid 16553] <... futex resumed>)        = ?
[pid 16553] +++ exited with 0 +++
[pid 16552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16554 attached
, child_tidptr=0x55557060c690) = 16554
[pid 16554] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16554] setpgid(0, 0)               = 0
[pid 16554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16554] write(3, "1000", 4)         = 4
[pid 16554] close(3)                    = 0
[pid 16554] write(1, "executing program\n", 18) = 18
[pid 16554] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16554] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16554] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16554] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16554] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16554] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16554] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16555 attached
 <unfinished ...>
[pid 16555] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16554] <... clone3 resumed> => {parent_tid=[16555]}, 88) = 16555
[pid 16555] <... set_robust_list resumed>) = 0
[pid 16554] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16555] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16554] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16555] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16555] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16554] <... futex resumed>)        = 0
[pid 16555] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16554] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16555] <... futex resumed>)        = 0
[pid 16554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16555] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16554] <... futex resumed>)        = 0
[pid 16555] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16554] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16555] <... futex resumed>)        = 0
[pid 16554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16555] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16554] <... futex resumed>)        = 0
[pid 16555] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16554] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16555] <... futex resumed>)        = 0
[pid 16554] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16555] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16554] <... futex resumed>)        = 0
[pid 16555] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16554] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16555] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16554] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16555] <... futex resumed>)        = 0
[pid 16555] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16554] exit_group(0)               = ?
[pid 16555] <... futex resumed>)        = 231
[pid 16555] +++ exited with 0 +++
[pid 16554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16556 attached
, child_tidptr=0x55557060c690) = 16556
[pid 16556] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16556] setpgid(0, 0)               = 0
[pid 16556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16556] write(3, "1000", 4)         = 4
[pid 16556] close(3)                    = 0
executing program
[pid 16556] write(1, "executing program\n", 18) = 18
[pid 16556] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16556] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16556] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16556] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16556] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16556] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16556] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16557]}, 88) = 16557
./strace-static-x86_64: Process 16557 attached
[pid 16556] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16557] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16556] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16557] <... set_robust_list resumed>) = 0
[pid 16556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16557] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16556] <... futex resumed>)        = 0
[pid 16557] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16557] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16556] <... futex resumed>)        = 0
[pid 16557] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16557] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16557] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16556] <... futex resumed>)        = 0
[pid 16556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16557] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16556] <... futex resumed>)        = 0
[pid 16556] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16556] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16557] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16557] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16556] <... futex resumed>)        = 0
[pid 16556] exit_group(0)               = ?
[pid 16557] +++ exited with 0 +++
[pid 16556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16558
./strace-static-x86_64: Process 16558 attached
[pid 16558] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16558] setpgid(0, 0)               = 0
[pid 16558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16558] write(3, "1000", 4)         = 4
[pid 16558] close(3)                    = 0
[pid 16558] write(1, "executing program\n", 18executing program
) = 18
[pid 16558] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16558] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16558] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16558] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16558] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16558] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16558] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16559 attached
 => {parent_tid=[16559]}, 88) = 16559
[pid 16559] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16559] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16558] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16559] <... futex resumed>)        = 0
[pid 16558] <... futex resumed>)        = 1
[pid 16559] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16559] <... futex resumed>)        = 0
[pid 16559] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16559] <... futex resumed>)        = 0
[pid 16559] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16558] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16559] <... futex resumed>)        = 0
[pid 16558] <... futex resumed>)        = 1
[pid 16559] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16558] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16559] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16559] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16559] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16558] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16558] exit_group(0)               = ?
[pid 16559] <... futex resumed>)        = ?
[pid 16559] +++ exited with 0 +++
[pid 16558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16560 attached
, child_tidptr=0x55557060c690) = 16560
[pid 16560] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16560] setpgid(0, 0)               = 0
[pid 16560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16560] write(3, "1000", 4)         = 4
executing program
[pid 16560] close(3)                    = 0
[pid 16560] write(1, "executing program\n", 18) = 18
[pid 16560] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16560] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16560] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16560] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16560] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16560] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16560] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16561 attached
 <unfinished ...>
[pid 16561] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16560] <... clone3 resumed> => {parent_tid=[16561]}, 88) = 16561
[pid 16561] <... set_robust_list resumed>) = 0
[pid 16561] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16560] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16561] <... futex resumed>)        = 0
[pid 16560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16561] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16560] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16561] <... futex resumed>)        = 0
[pid 16560] <... futex resumed>)        = 1
[pid 16561] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16561] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16560] <... futex resumed>)        = 0
[pid 16561] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16561] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16560] <... futex resumed>)        = 0
[pid 16560] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16560] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16561] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16561] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16560] <... futex resumed>)        = 0
[pid 16561] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16560] exit_group(0)               = ?
[pid 16561] <... futex resumed>)        = ?
[pid 16561] +++ exited with 0 +++
[pid 16560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16562
./strace-static-x86_64: Process 16562 attached
[pid 16562] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16562] setpgid(0, 0)               = 0
[pid 16562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16562] write(3, "1000", 4)         = 4
[pid 16562] close(3)                    = 0
[pid 16562] write(1, "executing program\n", 18executing program
) = 18
[pid 16562] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16562] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16562] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16562] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16562] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16562] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16562] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16563 attached
 => {parent_tid=[16563]}, 88) = 16563
[pid 16563] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16563] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16562] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16563] <... futex resumed>)        = 0
[pid 16562] <... futex resumed>)        = 1
[pid 16563] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16563] <... futex resumed>)        = 0
[pid 16563] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16563] <... futex resumed>)        = 0
[pid 16563] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16562] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16563] <... futex resumed>)        = 0
[pid 16563] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16563] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16563] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16562] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16562] exit_group(0)               = ?
[pid 16563] <... futex resumed>)        = ?
[pid 16563] +++ exited with 0 +++
[pid 16562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16564
./strace-static-x86_64: Process 16564 attached
[pid 16564] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16564] setpgid(0, 0)               = 0
[pid 16564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16564] write(3, "1000", 4)         = 4
[pid 16564] close(3)                    = 0
executing program
[pid 16564] write(1, "executing program\n", 18) = 18
[pid 16564] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16564] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16564] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16564] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16564] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16564] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16564] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16565]}, 88) = 16565
[pid 16564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16565 attached
 <unfinished ...>
[pid 16565] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16565] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16564] <... futex resumed>)        = 0
[pid 16564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16565] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16564] <... futex resumed>)        = 0
[pid 16564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16565] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16564] <... futex resumed>)        = 0
[pid 16564] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16564] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16565] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16565] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16564] <... futex resumed>)        = 0
[pid 16564] exit_group(0)               = ?
[pid 16565] +++ exited with 0 +++
[pid 16564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16566 attached
, child_tidptr=0x55557060c690) = 16566
[pid 16566] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16566] setpgid(0, 0)               = 0
[pid 16566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16566] write(3, "1000", 4)         = 4
[pid 16566] close(3)                    = 0
[pid 16566] write(1, "executing program\n", 18executing program
) = 18
[pid 16566] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16566] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16566] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16566] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16566] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16566] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16566] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16567 attached
 => {parent_tid=[16567]}, 88) = 16567
[pid 16567] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16567] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16567] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16567] <... futex resumed>)        = 0
[pid 16567] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16567] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16567] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16567] <... futex resumed>)        = 0
[pid 16567] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16567] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16567] <... futex resumed>)        = 0
[pid 16567] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16567] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16566] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16567] <... futex resumed>)        = 0
[pid 16566] <... futex resumed>)        = 1
[pid 16566] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16567] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16567] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16567] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16566] exit_group(0)               = ?
[pid 16567] <... futex resumed>)        = ?
[pid 16567] +++ exited with 0 +++
[pid 16566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16568 attached
, child_tidptr=0x55557060c690) = 16568
[pid 16568] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16568] setpgid(0, 0)               = 0
[pid 16568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16568] write(3, "1000", 4)         = 4
[pid 16568] close(3)                    = 0
executing program
[pid 16568] write(1, "executing program\n", 18) = 18
[pid 16568] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16568] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16568] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16568] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16568] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16568] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16568] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16569 attached
 <unfinished ...>
[pid 16569] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16568] <... clone3 resumed> => {parent_tid=[16569]}, 88) = 16569
[pid 16569] <... set_robust_list resumed>) = 0
[pid 16568] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16569] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16568] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16569] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16569] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16568] <... futex resumed>)        = 0
[pid 16569] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16569] <... futex resumed>)        = 0
[pid 16568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16569] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16568] <... futex resumed>)        = 0
[pid 16569] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16569] <... futex resumed>)        = 0
[pid 16568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16569] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16568] <... futex resumed>)        = 0
[pid 16569] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16569] <... futex resumed>)        = 0
[pid 16568] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16569] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16568] <... futex resumed>)        = 0
[pid 16569] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16568] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16569] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16568] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16569] <... futex resumed>)        = 0
[pid 16569] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16568] exit_group(0)               = ?
[pid 16569] <... futex resumed>)        = ?
[pid 16569] +++ exited with 0 +++
[pid 16568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16570
./strace-static-x86_64: Process 16570 attached
[pid 16570] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16570] setpgid(0, 0)               = 0
[pid 16570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16570] write(3, "1000", 4)         = 4
[pid 16570] close(3)                    = 0
[pid 16570] write(1, "executing program\n", 18executing program
) = 18
[pid 16570] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16570] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16570] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16570] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16570] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16570] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16570] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16571 attached
 => {parent_tid=[16571]}, 88) = 16571
[pid 16571] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16571] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16571] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16570] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16571] <... futex resumed>)        = 0
[pid 16571] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16571] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16571] <... futex resumed>)        = 0
[pid 16571] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16571] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16571] <... futex resumed>)        = 0
[pid 16571] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16571] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16570] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16571] <... futex resumed>)        = 0
[pid 16571] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16570] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16571] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16571] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16571] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16570] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16570] exit_group(0)               = ?
[pid 16571] <... futex resumed>)        = ?
[pid 16571] +++ exited with 0 +++
[pid 16570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16572 attached
, child_tidptr=0x55557060c690) = 16572
[pid 16572] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16572] setpgid(0, 0)               = 0
[pid 16572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16572] write(3, "1000", 4executing program
)         = 4
[pid 16572] close(3)                    = 0
[pid 16572] write(1, "executing program\n", 18) = 18
[pid 16572] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16572] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16572] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16572] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16572] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16572] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16572] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16573]}, 88) = 16573
[pid 16572] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16573 attached
 <unfinished ...>
[pid 16573] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16573] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16573] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16572] <... futex resumed>)        = 0
[pid 16572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16573] <... futex resumed>)        = 1
[pid 16573] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16572] <... futex resumed>)        = 0
[pid 16572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16573] <... futex resumed>)        = 1
[pid 16573] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16572] <... futex resumed>)        = 0
[pid 16572] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16572] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16573] <... futex resumed>)        = 1
[pid 16573] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16573] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16572] <... futex resumed>)        = 0
[pid 16573] <... futex resumed>)        = 1
[pid 16572] exit_group(0 <unfinished ...>
[pid 16573] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16572] <... exit_group resumed>)   = ?
[pid 16573] +++ exited with 0 +++
[pid 16572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16574 attached
, child_tidptr=0x55557060c690) = 16574
[pid 16574] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16574] setpgid(0, 0)               = 0
[pid 16574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16574] write(3, "1000", 4)         = 4
[pid 16574] close(3)                    = 0
[pid 16574] write(1, "executing program\n", 18executing program
) = 18
[pid 16574] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16574] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16574] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16574] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16574] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16574] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16574] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16575]}, 88) = 16575
[pid 16574] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16575 attached
 <unfinished ...>
[pid 16575] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16575] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16575] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16574] <... futex resumed>)        = 0
[pid 16574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16575] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16574] <... futex resumed>)        = 0
[pid 16574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16575] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16574] <... futex resumed>)        = 0
[pid 16574] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16574] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16575] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16575] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16574] <... futex resumed>)        = 0
[pid 16574] exit_group(0 <unfinished ...>
[pid 16575] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16574] <... exit_group resumed>)   = ?
[pid 16575] <... futex resumed>)        = ?
[pid 16575] +++ exited with 0 +++
[pid 16574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16576 attached
, child_tidptr=0x55557060c690) = 16576
[pid 16576] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16576] setpgid(0, 0)               = 0
[pid 16576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16576] write(3, "1000", 4)         = 4
[pid 16576] close(3)                    = 0
[pid 16576] write(1, "executing program\n", 18executing program
) = 18
[pid 16576] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16576] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16576] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16576] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16576] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16576] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16576] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16577 attached
 => {parent_tid=[16577]}, 88) = 16577
[pid 16577] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16577] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16576] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16577] <... futex resumed>)        = 0
[pid 16577] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16577] <... futex resumed>)        = 0
[pid 16577] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16577] <... futex resumed>)        = 0
[pid 16577] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16576] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16577] <... futex resumed>)        = 0
[pid 16576] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16577] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16577] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16577] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16576] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16576] exit_group(0)               = ?
[pid 16577] <... futex resumed>)        = ?
[pid 16577] +++ exited with 0 +++
[pid 16576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16578 attached
, child_tidptr=0x55557060c690) = 16578
[pid 16578] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16578] setpgid(0, 0)               = 0
[pid 16578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16578] write(3, "1000", 4)         = 4
executing program
[pid 16578] close(3)                    = 0
[pid 16578] write(1, "executing program\n", 18) = 18
[pid 16578] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16578] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16578] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16578] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16578] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16578] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16578] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16579 attached
 => {parent_tid=[16579]}, 88) = 16579
[pid 16579] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16578] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16579] <... set_robust_list resumed>) = 0
[pid 16579] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16578] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16579] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16579] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16578] <... futex resumed>)        = 0
[pid 16579] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16579] <... futex resumed>)        = 0
[pid 16578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16579] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16578] <... futex resumed>)        = 0
[pid 16579] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16579] <... futex resumed>)        = 0
[pid 16578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16579] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16578] <... futex resumed>)        = 0
[pid 16579] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16579] <... futex resumed>)        = 0
[pid 16578] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16579] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16578] <... futex resumed>)        = 0
[pid 16579] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16578] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16579] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16578] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16579] <... futex resumed>)        = 0
[pid 16578] exit_group(0 <unfinished ...>
[pid 16579] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16578] <... exit_group resumed>)   = ?
[pid 16579] <... futex resumed>)        = ?
[pid 16579] +++ exited with 0 +++
[pid 16578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16580
./strace-static-x86_64: Process 16580 attached
[pid 16580] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16580] setpgid(0, 0)               = 0
[pid 16580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16580] write(3, "1000", 4)         = 4
[pid 16580] close(3executing program
)                    = 0
[pid 16580] write(1, "executing program\n", 18) = 18
[pid 16580] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16580] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16580] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16580] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16580] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16580] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16580] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16581 attached
 => {parent_tid=[16581]}, 88) = 16581
[pid 16581] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16581] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16580] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16581] <... futex resumed>)        = 0
[pid 16581] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16581] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16581] <... futex resumed>)        = 0
[pid 16581] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16581] <... futex resumed>)        = 0
[pid 16581] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16580] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16581] <... futex resumed>)        = 0
[pid 16581] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16580] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16581] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16581] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16581] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16580] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16580] exit_group(0)               = ?
[pid 16581] <... futex resumed>)        = ?
[pid 16581] +++ exited with 0 +++
[pid 16580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16582 attached
, child_tidptr=0x55557060c690) = 16582
[pid 16582] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16582] setpgid(0, 0)               = 0
[pid 16582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16582] write(3, "1000", 4)         = 4
[pid 16582] close(3)                    = 0
[pid 16582] write(1, "executing program\n", 18executing program
) = 18
[pid 16582] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16582] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16582] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16582] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16582] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16582] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16582] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16583 attached
 <unfinished ...>
[pid 16583] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16583] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16582] <... clone3 resumed> => {parent_tid=[16583]}, 88) = 16583
[pid 16582] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16583] <... futex resumed>)        = 0
[pid 16583] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16583] <... futex resumed>)        = 0
[pid 16582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16583] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16582] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16583] <... futex resumed>)        = 0
[pid 16582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16583] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16582] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16582] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16583] <... futex resumed>)        = 0
[pid 16583] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16583] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16583] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16582] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16582] exit_group(0)               = ?
[pid 16583] <... futex resumed>)        = ?
[pid 16583] +++ exited with 0 +++
[pid 16582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16584 attached
, child_tidptr=0x55557060c690) = 16584
[pid 16584] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16584] setpgid(0, 0)               = 0
[pid 16584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16584] write(3, "1000", 4)         = 4
executing program
[pid 16584] close(3)                    = 0
[pid 16584] write(1, "executing program\n", 18) = 18
[pid 16584] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16584] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16584] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16584] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16584] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16584] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16584] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16585 attached
 <unfinished ...>
[pid 16585] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16584] <... clone3 resumed> => {parent_tid=[16585]}, 88) = 16585
[pid 16585] <... set_robust_list resumed>) = 0
[pid 16584] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16584] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16585] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16584] <... futex resumed>)        = 0
[pid 16585] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16584] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16585] <... futex resumed>)        = 0
[pid 16584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16585] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16584] <... futex resumed>)        = 0
[pid 16585] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16584] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16585] <... futex resumed>)        = 0
[pid 16584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16585] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16584] <... futex resumed>)        = 0
[pid 16585] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16584] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16585] <... futex resumed>)        = 0
[pid 16585] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16584] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16585] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16584] <... futex resumed>)        = 0
[pid 16584] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16585] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16584] <... futex resumed>)        = 0
[pid 16584] exit_group(0)               = ?
[pid 16585] +++ exited with 0 +++
[pid 16584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16586
./strace-static-x86_64: Process 16586 attached
[pid 16586] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16586] setpgid(0, 0)               = 0
[pid 16586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16586] write(3, "1000", 4)         = 4
[pid 16586] close(3)                    = 0
[pid 16586] write(1, "executing program\n", 18executing program
) = 18
[pid 16586] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16586] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16586] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16586] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16586] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16586] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16586] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16587]}, 88) = 16587
[pid 16586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16587 attached
 <unfinished ...>
[pid 16587] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16587] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16587] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16586] <... futex resumed>)        = 0
[pid 16586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16587] <... futex resumed>)        = 1
[pid 16587] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16586] <... futex resumed>)        = 0
[pid 16586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16587] <... futex resumed>)        = 1
[pid 16587] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16586] <... futex resumed>)        = 0
[pid 16586] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16586] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16587] <... futex resumed>)        = 1
[pid 16587] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16587] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16586] <... futex resumed>)        = 0
[pid 16586] exit_group(0)               = ?
[pid 16587] <... futex resumed>)        = ?
[pid 16587] +++ exited with 0 +++
[pid 16586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16588
./strace-static-x86_64: Process 16588 attached
[pid 16588] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16588] setpgid(0, 0)               = 0
[pid 16588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16588] write(3, "1000", 4)         = 4
[pid 16588] close(3)                    = 0
[pid 16588] write(1, "executing program\n", 18executing program
) = 18
[pid 16588] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16588] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16588] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16588] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16588] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16588] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16588] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16589]}, 88) = 16589
[pid 16588] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16589 attached
 <unfinished ...>
[pid 16589] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16589] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16589] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16588] <... futex resumed>)        = 0
[pid 16588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16589] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16588] <... futex resumed>)        = 0
[pid 16588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16589] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16588] <... futex resumed>)        = 0
[pid 16588] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16588] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16589] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16589] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16588] <... futex resumed>)        = 0
[pid 16588] exit_group(0)               = ?
[pid 16589] +++ exited with 0 +++
[pid 16588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16590 attached
, child_tidptr=0x55557060c690) = 16590
[pid 16590] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16590] setpgid(0, 0)               = 0
[pid 16590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16590] write(3, "1000", 4)         = 4
[pid 16590] close(3)                    = 0
[pid 16590] write(1, "executing program\n", 18executing program
) = 18
[pid 16590] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16590] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16590] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16590] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16590] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16590] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16590] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16591 attached
 => {parent_tid=[16591]}, 88) = 16591
[pid 16591] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16591] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16590] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16591] <... futex resumed>)        = 0
[pid 16591] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16591] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16590] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16591] <... futex resumed>)        = 0
[pid 16591] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16591] <... futex resumed>)        = 0
[pid 16591] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16590] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16591] <... futex resumed>)        = 0
[pid 16590] <... futex resumed>)        = 1
[pid 16591] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16590] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16591] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16591] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16591] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16590] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16590] exit_group(0)               = ?
[pid 16591] <... futex resumed>)        = ?
[pid 16591] +++ exited with 0 +++
[pid 16590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16592 attached
, child_tidptr=0x55557060c690) = 16592
[pid 16592] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16592] setpgid(0, 0)               = 0
[pid 16592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16592] write(3, "1000", 4)         = 4
executing program
[pid 16592] close(3)                    = 0
[pid 16592] write(1, "executing program\n", 18) = 18
[pid 16592] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16592] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16592] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16592] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16592] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16592] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16592] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16593 attached
 => {parent_tid=[16593]}, 88) = 16593
[pid 16593] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16592] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16593] <... set_robust_list resumed>) = 0
[pid 16592] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16593] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16593] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16592] <... futex resumed>)        = 0
[pid 16593] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16593] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16592] <... futex resumed>)        = 0
[pid 16592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16593] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16592] <... futex resumed>)        = 0
[pid 16592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16593] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16592] <... futex resumed>)        = 0
[pid 16592] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16592] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16593] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16593] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16592] <... futex resumed>)        = 0
[pid 16592] exit_group(0)               = ?
[pid 16593] +++ exited with 0 +++
[pid 16592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16594 attached
, child_tidptr=0x55557060c690) = 16594
[pid 16594] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16594] setpgid(0, 0)               = 0
[pid 16594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16594] write(3, "1000", 4)         = 4
[pid 16594] close(3)                    = 0
[pid 16594] write(1, "executing program\n", 18executing program
) = 18
[pid 16594] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16594] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16594] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16594] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16594] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16594] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16594] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16595 attached
 => {parent_tid=[16595]}, 88) = 16595
[pid 16595] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16595] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16594] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16595] <... futex resumed>)        = 0
[pid 16594] <... futex resumed>)        = 1
[pid 16595] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16595] <... futex resumed>)        = 0
[pid 16595] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16595] <... futex resumed>)        = 0
[pid 16594] <... futex resumed>)        = 1
[pid 16595] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16595] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16594] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16594] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16595] <... futex resumed>)        = 0
[pid 16594] <... futex resumed>)        = 1
[pid 16594] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16595] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16595] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16595] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16594] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16594] exit_group(0)               = ?
[pid 16595] <... futex resumed>)        = ?
[pid 16595] +++ exited with 0 +++
[pid 16594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16596 attached
, child_tidptr=0x55557060c690) = 16596
[pid 16596] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16596] setpgid(0, 0)               = 0
[pid 16596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16596] write(3, "1000", 4)         = 4
[pid 16596] close(3)                    = 0
[pid 16596] write(1, "executing program\n", 18executing program
) = 18
[pid 16596] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16596] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16596] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16596] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16596] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16596] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16596] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16597]}, 88) = 16597
[pid 16596] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16597 attached
 <unfinished ...>
[pid 16597] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16597] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16597] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16596] <... futex resumed>)        = 0
[pid 16596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16597] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16596] <... futex resumed>)        = 0
[pid 16596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16597] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16596] <... futex resumed>)        = 0
[pid 16596] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16596] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16597] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16597] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16596] <... futex resumed>)        = 0
[pid 16596] exit_group(0)               = ?
[pid 16597] +++ exited with 0 +++
[pid 16596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16598 attached
, child_tidptr=0x55557060c690) = 16598
[pid 16598] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16598] setpgid(0, 0)               = 0
[pid 16598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16598] write(3, "1000", 4)         = 4
[pid 16598] close(3)                    = 0
[pid 16598] write(1, "executing program\n", 18executing program
) = 18
[pid 16598] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16598] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16598] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16598] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16598] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16598] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16598] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16599 attached
 => {parent_tid=[16599]}, 88) = 16599
[pid 16599] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16599] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16599] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16598] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16599] <... futex resumed>)        = 0
[pid 16598] <... futex resumed>)        = 1
[pid 16599] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16599] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16599] <... futex resumed>)        = 0
[pid 16599] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16599] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16599] <... futex resumed>)        = 0
[pid 16599] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16599] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16598] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16599] <... futex resumed>)        = 0
[pid 16599] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16599] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16599] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16598] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16598] exit_group(0)               = ?
[pid 16599] <... futex resumed>)        = ?
[pid 16599] +++ exited with 0 +++
[pid 16598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16600 attached
, child_tidptr=0x55557060c690) = 16600
[pid 16600] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16600] setpgid(0, 0)               = 0
[pid 16600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16600] write(3, "1000", 4)         = 4
[pid 16600] close(3)                    = 0
[pid 16600] write(1, "executing program\n", 18executing program
) = 18
[pid 16600] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16600] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16600] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16600] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16600] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16600] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16600] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16601 attached
 => {parent_tid=[16601]}, 88) = 16601
[pid 16601] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16601] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16601] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16600] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16601] <... futex resumed>)        = 0
[pid 16600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16601] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16601] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16600] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16601] <... futex resumed>)        = 0
[pid 16601] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16601] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16601] <... futex resumed>)        = 0
[pid 16601] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16601] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16600] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16601] <... futex resumed>)        = 0
[pid 16600] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16601] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16601] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16601] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16600] <... futex resumed>)        = 0
[pid 16600] exit_group(0)               = ?
[pid 16601] <... futex resumed>)        = ?
[pid 16601] +++ exited with 0 +++
[pid 16600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16602 attached
, child_tidptr=0x55557060c690) = 16602
[pid 16602] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16602] setpgid(0, 0)               = 0
[pid 16602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16602] write(3, "1000", 4)         = 4
executing program
[pid 16602] close(3)                    = 0
[pid 16602] write(1, "executing program\n", 18) = 18
[pid 16602] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16602] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16602] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16602] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16602] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16602] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16602] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16603 attached
 => {parent_tid=[16603]}, 88) = 16603
[pid 16603] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16602] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16603] <... set_robust_list resumed>) = 0
[pid 16603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16603] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16602] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16603] <... futex resumed>)        = 0
[pid 16602] <... futex resumed>)        = 1
[pid 16603] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16603] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16603] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16602] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16603] <... futex resumed>)        = 0
[pid 16602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16603] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16603] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16602] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16603] <... futex resumed>)        = 0
[pid 16602] <... futex resumed>)        = 1
[pid 16603] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16603] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16602] <... futex resumed>)        = 0
[pid 16603] <... futex resumed>)        = 1
[pid 16602] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16602] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16603] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16603] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16602] <... futex resumed>)        = 0
[pid 16603] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16602] exit_group(0)               = ?
[pid 16603] <... futex resumed>)        = ?
[pid 16603] +++ exited with 0 +++
[pid 16602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16604
./strace-static-x86_64: Process 16604 attached
[pid 16604] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16604] setpgid(0, 0)               = 0
[pid 16604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16604] write(3, "1000", 4)         = 4
[pid 16604] close(3)                    = 0
[pid 16604] write(1, "executing program\n", 18executing program
) = 18
[pid 16604] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16604] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16604] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16604] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16604] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16604] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16604] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16605 attached
 => {parent_tid=[16605]}, 88) = 16605
[pid 16605] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16605] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16604] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16605] <... futex resumed>)        = 0
[pid 16605] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16605] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16605] <... futex resumed>)        = 0
[pid 16605] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16605] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16605] <... futex resumed>)        = 0
[pid 16605] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16605] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16604] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16605] <... futex resumed>)        = 0
[pid 16604] <... futex resumed>)        = 1
[pid 16605] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16604] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16605] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16605] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16605] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16604] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16604] exit_group(0)               = ?
[pid 16605] <... futex resumed>)        = ?
[pid 16605] +++ exited with 0 +++
[pid 16604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16606 attached
, child_tidptr=0x55557060c690) = 16606
[pid 16606] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16606] setpgid(0, 0)               = 0
[pid 16606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16606] write(3, "1000", 4)         = 4
[pid 16606] close(3)                    = 0
executing program
[pid 16606] write(1, "executing program\n", 18) = 18
[pid 16606] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16606] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16606] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16606] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16606] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16606] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16606] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16607]}, 88) = 16607
[pid 16606] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 16607 attached
NULL, 8) = 0
[pid 16607] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16607] <... set_robust_list resumed>) = 0
[pid 16606] <... futex resumed>)        = 0
[pid 16607] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16607] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16607] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16606] <... futex resumed>)        = 0
[pid 16606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16607] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16606] <... futex resumed>)        = 0
[pid 16606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16607] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16606] <... futex resumed>)        = 0
[pid 16606] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16606] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16607] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16607] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16606] <... futex resumed>)        = 0
[pid 16606] exit_group(0)               = ?
[pid 16607] +++ exited with 0 +++
[pid 16606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16608
./strace-static-x86_64: Process 16608 attached
[pid 16608] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16608] setpgid(0, 0)               = 0
[pid 16608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16608] write(3, "1000", 4)         = 4
[pid 16608] close(3)                    = 0
executing program
[pid 16608] write(1, "executing program\n", 18) = 18
[pid 16608] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16608] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16608] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16608] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16608] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16608] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16608] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16609 attached
 => {parent_tid=[16609]}, 88) = 16609
[pid 16609] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16608] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16609] <... set_robust_list resumed>) = 0
[pid 16608] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16609] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16609] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16608] <... futex resumed>)        = 0
[pid 16609] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16609] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16608] <... futex resumed>)        = 0
[pid 16608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16609] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16608] <... futex resumed>)        = 0
[pid 16608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16609] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16609] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16608] <... futex resumed>)        = 0
[pid 16608] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16608] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16609] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16609] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16608] <... futex resumed>)        = 0
[pid 16608] exit_group(0)               = ?
[pid 16609] +++ exited with 0 +++
[pid 16608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16610
./strace-static-x86_64: Process 16610 attached
[pid 16610] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16610] setpgid(0, 0)               = 0
[pid 16610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16610] write(3, "1000", 4)         = 4
[pid 16610] close(3)                    = 0
[pid 16610] write(1, "executing program\n", 18executing program
) = 18
[pid 16610] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16610] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16610] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16610] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16610] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16610] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16610] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16611 attached
 => {parent_tid=[16611]}, 88) = 16611
[pid 16611] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16611] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16611] <... futex resumed>)        = 0
[pid 16611] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16611] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16611] <... futex resumed>)        = 0
[pid 16611] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16611] <... futex resumed>)        = 0
[pid 16610] <... futex resumed>)        = 1
[pid 16611] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16611] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16610] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16611] <... futex resumed>)        = 0
[pid 16610] <... futex resumed>)        = 1
[pid 16610] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16611] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16611] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16611] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16610] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16610] exit_group(0)               = ?
[pid 16611] <... futex resumed>)        = ?
[pid 16611] +++ exited with 0 +++
[pid 16610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16612 attached
, child_tidptr=0x55557060c690) = 16612
[pid 16612] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16612] setpgid(0, 0)               = 0
[pid 16612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16612] write(3, "1000", 4)         = 4
[pid 16612] close(3)                    = 0
executing program
[pid 16612] write(1, "executing program\n", 18) = 18
[pid 16612] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16612] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16612] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16612] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16612] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16612] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16612] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16613 attached
 => {parent_tid=[16613]}, 88) = 16613
[pid 16613] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16612] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16613] <... set_robust_list resumed>) = 0
[pid 16612] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16613] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16613] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16612] <... futex resumed>)        = 0
[pid 16613] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16613] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16612] <... futex resumed>)        = 0
[pid 16612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16613] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16612] <... futex resumed>)        = 0
[pid 16612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16613] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16613] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16612] <... futex resumed>)        = 0
[pid 16612] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16612] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16613] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16613] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16613] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16612] <... futex resumed>)        = 0
[pid 16612] exit_group(0)               = ?
[pid 16613] +++ exited with 0 +++
[pid 16612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16614
./strace-static-x86_64: Process 16614 attached
[pid 16614] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16614] setpgid(0, 0)               = 0
[pid 16614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16614] write(3, "1000", 4)         = 4
[pid 16614] close(3)                    = 0
[pid 16614] write(1, "executing program\n", 18executing program
) = 18
[pid 16614] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16614] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16614] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16614] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16614] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16614] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16614] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16615 attached
 <unfinished ...>
[pid 16615] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16614] <... clone3 resumed> => {parent_tid=[16615]}, 88) = 16615
[pid 16614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16615] <... futex resumed>)        = 0
[pid 16614] <... futex resumed>)        = 1
[pid 16615] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16615] <... futex resumed>)        = 0
[pid 16615] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16615] <... futex resumed>)        = 0
[pid 16614] <... futex resumed>)        = 1
[pid 16615] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16615] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16614] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16615] <... futex resumed>)        = 0
[pid 16614] <... futex resumed>)        = 1
[pid 16614] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16615] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16615] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16615] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16614] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16614] exit_group(0)               = ?
[pid 16615] <... futex resumed>)        = ?
[pid 16615] +++ exited with 0 +++
[pid 16614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16616 attached
, child_tidptr=0x55557060c690) = 16616
[pid 16616] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16616] setpgid(0, 0)               = 0
[pid 16616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16616] write(3, "1000", 4)         = 4
[pid 16616] close(3)                    = 0
executing program
[pid 16616] write(1, "executing program\n", 18) = 18
[pid 16616] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16616] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16616] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16616] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16616] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16616] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16616] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16617 attached
 => {parent_tid=[16617]}, 88) = 16617
[pid 16616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16617] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16617] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16617] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16616] <... futex resumed>)        = 0
[pid 16616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16617] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16616] <... futex resumed>)        = 0
[pid 16616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16617] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16616] <... futex resumed>)        = 0
[pid 16616] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16616] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16617] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16617] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16616] <... futex resumed>)        = 0
[pid 16616] exit_group(0)               = ?
[pid 16617] +++ exited with 0 +++
[pid 16616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16618
./strace-static-x86_64: Process 16618 attached
[pid 16618] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16618] setpgid(0, 0)               = 0
[pid 16618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16618] write(3, "1000", 4)         = 4
[pid 16618] close(3)                    = 0
[pid 16618] write(1, "executing program\n", 18executing program
) = 18
[pid 16618] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16618] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16618] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16618] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16618] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16618] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16618] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16619 attached
 => {parent_tid=[16619]}, 88) = 16619
[pid 16619] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16619] <... futex resumed>)        = 0
[pid 16618] <... futex resumed>)        = 1
[pid 16619] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16619] <... futex resumed>)        = 0
[pid 16619] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16619] <... futex resumed>)        = 0
[pid 16619] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16618] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16619] <... futex resumed>)        = 0
[pid 16618] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16619] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16619] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16619] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16618] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16618] exit_group(0)               = ?
[pid 16619] <... futex resumed>)        = ?
[pid 16619] +++ exited with 0 +++
[pid 16618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16620 attached
, child_tidptr=0x55557060c690) = 16620
[pid 16620] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16620] setpgid(0, 0)               = 0
[pid 16620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16620] write(3, "1000", 4)         = 4
[pid 16620] close(3)                    = 0
[pid 16620] write(1, "executing program\n", 18executing program
) = 18
[pid 16620] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16620] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16620] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16620] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16620] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16620] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16620] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16621]}, 88) = 16621
[pid 16620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16621 attached
 <unfinished ...>
[pid 16621] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16621] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16620] <... futex resumed>)        = 0
[pid 16620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16621] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16620] <... futex resumed>)        = 0
[pid 16620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16621] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16620] <... futex resumed>)        = 0
[pid 16620] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16620] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16621] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16621] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16620] <... futex resumed>)        = 0
[pid 16620] exit_group(0)               = ?
[pid 16621] +++ exited with 0 +++
[pid 16620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16622 attached
, child_tidptr=0x55557060c690) = 16622
[pid 16622] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16622] setpgid(0, 0)               = 0
[pid 16622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16622] write(3, "1000", 4)         = 4
[pid 16622] close(3)                    = 0
[pid 16622] write(1, "executing program\n", 18executing program
) = 18
[pid 16622] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16622] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16622] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16622] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16622] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16622] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16622] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16623 attached
 => {parent_tid=[16623]}, 88) = 16623
[pid 16623] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16622] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16623] <... futex resumed>)        = 0
[pid 16623] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16623] <... futex resumed>)        = 0
[pid 16623] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16623] <... futex resumed>)        = 0
[pid 16623] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16622] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16623] <... futex resumed>)        = 0
[pid 16623] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16623] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16623] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16622] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16622] exit_group(0)               = ?
[pid 16623] <... futex resumed>)        = ?
[pid 16623] +++ exited with 0 +++
[pid 16622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16624
./strace-static-x86_64: Process 16624 attached
[pid 16624] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16624] setpgid(0, 0)               = 0
[pid 16624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16624] write(3, "1000", 4)         = 4
[pid 16624] close(3)                    = 0
executing program
[pid 16624] write(1, "executing program\n", 18) = 18
[pid 16624] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16624] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16624] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16624] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16624] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16624] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16624] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16625 attached
 => {parent_tid=[16625]}, 88) = 16625
[pid 16624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16625] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16625] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16624] <... futex resumed>)        = 0
[pid 16624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16625] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16624] <... futex resumed>)        = 0
[pid 16624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16625] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16624] <... futex resumed>)        = 0
[pid 16624] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16624] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16625] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16625] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16624] <... futex resumed>)        = 0
[pid 16624] exit_group(0)               = ?
[pid 16625] +++ exited with 0 +++
[pid 16624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16626
./strace-static-x86_64: Process 16626 attached
[pid 16626] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16626] setpgid(0, 0)               = 0
[pid 16626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16626] write(3, "1000", 4)         = 4
[pid 16626] close(3)                    = 0
[pid 16626] write(1, "executing program\n", 18executing program
) = 18
[pid 16626] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16626] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16626] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16626] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16626] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16626] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16626] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16627 attached
 => {parent_tid=[16627]}, 88) = 16627
[pid 16627] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16627] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16627] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16627] <... futex resumed>)        = 0
[pid 16626] <... futex resumed>)        = 1
[pid 16627] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16627] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16627] <... futex resumed>)        = 0
[pid 16627] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16627] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16627] <... futex resumed>)        = 0
[pid 16627] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16627] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16626] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16627] <... futex resumed>)        = 0
[pid 16627] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16626] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16627] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16627] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16627] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16626] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16626] exit_group(0)               = ?
[pid 16627] <... futex resumed>)        = ?
[pid 16627] +++ exited with 0 +++
[pid 16626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16628
./strace-static-x86_64: Process 16628 attached
[pid 16628] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16628] setpgid(0, 0)               = 0
[pid 16628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16628] write(3, "1000", 4)         = 4
[pid 16628] close(3)                    = 0
executing program
[pid 16628] write(1, "executing program\n", 18) = 18
[pid 16628] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16628] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16628] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16628] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16628] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16628] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16628] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16629 attached
 <unfinished ...>
[pid 16629] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16629] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16628] <... clone3 resumed> => {parent_tid=[16629]}, 88) = 16629
[pid 16628] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16629] <... futex resumed>)        = 0
[pid 16629] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16629] <... futex resumed>)        = 0
[pid 16628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16629] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16628] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16629] <... futex resumed>)        = 0
[pid 16629] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16628] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16629] <... futex resumed>)        = 0
[pid 16628] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16629] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16629] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16628] <... futex resumed>)        = 0
[pid 16629] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16628] exit_group(0)               = ?
[pid 16629] <... futex resumed>)        = ?
[pid 16629] +++ exited with 0 +++
[pid 16628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16630 attached
, child_tidptr=0x55557060c690) = 16630
[pid 16630] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16630] setpgid(0, 0)               = 0
[pid 16630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16630] write(3, "1000", 4)         = 4
[pid 16630] close(3executing program
)                    = 0
[pid 16630] write(1, "executing program\n", 18) = 18
[pid 16630] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16630] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16630] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16630] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16630] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16630] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16630] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16631 attached
 <unfinished ...>
[pid 16631] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16631] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16630] <... clone3 resumed> => {parent_tid=[16631]}, 88) = 16631
[pid 16630] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16631] <... futex resumed>)        = 0
[pid 16630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16631] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16631] <... futex resumed>)        = 0
[pid 16631] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16631] <... futex resumed>)        = 0
[pid 16630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16631] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16630] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16630] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16631] <... futex resumed>)        = 0
[pid 16630] <... futex resumed>)        = 1
[pid 16630] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16631] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16631] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16630] <... futex resumed>)        = 0
[pid 16631] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16630] exit_group(0)               = ?
[pid 16631] <... futex resumed>)        = ?
[pid 16631] +++ exited with 0 +++
[pid 16630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16632
./strace-static-x86_64: Process 16632 attached
[pid 16632] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16632] setpgid(0, 0)               = 0
[pid 16632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16632] write(3, "1000", 4)         = 4
[pid 16632] close(3)                    = 0
executing program
[pid 16632] write(1, "executing program\n", 18) = 18
[pid 16632] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16632] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16632] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16632] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16632] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16632] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16632] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16633 attached
 <unfinished ...>
[pid 16633] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16633] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16632] <... clone3 resumed> => {parent_tid=[16633]}, 88) = 16633
[pid 16632] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16633] <... futex resumed>)        = 0
[pid 16632] <... futex resumed>)        = 1
[pid 16633] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16633] <... futex resumed>)        = 0
[pid 16632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16633] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16632] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16633] <... futex resumed>)        = 0
[pid 16632] <... futex resumed>)        = 1
[pid 16633] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16632] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16633] <... futex resumed>)        = 0
[pid 16632] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16633] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16633] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16633] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16632] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16632] exit_group(0)               = ?
[pid 16633] <... futex resumed>)        = ?
[pid 16633] +++ exited with 0 +++
[pid 16632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16634
./strace-static-x86_64: Process 16634 attached
[pid 16634] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16634] setpgid(0, 0)               = 0
[pid 16634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16634] write(3, "1000", 4)         = 4
[pid 16634] close(3executing program
)                    = 0
[pid 16634] write(1, "executing program\n", 18) = 18
[pid 16634] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16634] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16634] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16634] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16634] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16634] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16634] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16635 attached
 <unfinished ...>
[pid 16635] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16634] <... clone3 resumed> => {parent_tid=[16635]}, 88) = 16635
[pid 16634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16635] <... futex resumed>)        = 0
[pid 16635] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16635] <... futex resumed>)        = 0
[pid 16635] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16635] <... futex resumed>)        = 0
[pid 16635] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16634] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16634] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16635] <... futex resumed>)        = 0
[pid 16634] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16635] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16635] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16635] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16634] <... futex resumed>)        = 0
[pid 16634] exit_group(0)               = ?
[pid 16635] <... futex resumed>)        = ?
[pid 16635] +++ exited with 0 +++
[pid 16634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16636
./strace-static-x86_64: Process 16636 attached
[pid 16636] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16636] setpgid(0, 0)               = 0
[pid 16636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16636] write(3, "1000", 4)         = 4
[pid 16636] close(3executing program
)                    = 0
[pid 16636] write(1, "executing program\n", 18) = 18
[pid 16636] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16636] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16636] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16636] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16636] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16636] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16636] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16637 attached
 <unfinished ...>
[pid 16637] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16636] <... clone3 resumed> => {parent_tid=[16637]}, 88) = 16637
[pid 16636] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16637] <... futex resumed>)        = 0
[pid 16637] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16637] <... futex resumed>)        = 0
[pid 16636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16637] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16636] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16637] <... futex resumed>)        = 0
[pid 16637] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16636] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16637] <... futex resumed>)        = 0
[pid 16636] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16637] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16637] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16636] <... futex resumed>)        = 0
[pid 16637] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16636] exit_group(0)               = ?
[pid 16637] <... futex resumed>)        = ?
[pid 16637] +++ exited with 0 +++
[pid 16636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16638
./strace-static-x86_64: Process 16638 attached
[pid 16638] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16638] setpgid(0, 0)               = 0
[pid 16638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16638] write(3, "1000", 4)         = 4
executing program
[pid 16638] close(3)                    = 0
[pid 16638] write(1, "executing program\n", 18) = 18
[pid 16638] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16638] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16638] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16638] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16638] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16638] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16638] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16639]}, 88) = 16639
./strace-static-x86_64: Process 16639 attached
[pid 16638] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16639] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16639] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16638] <... futex resumed>)        = 0
[pid 16638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16639] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16638] <... futex resumed>)        = 0
[pid 16638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16639] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16638] <... futex resumed>)        = 0
[pid 16638] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16638] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16639] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16639] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16638] <... futex resumed>)        = 0
[pid 16638] exit_group(0)               = ?
[pid 16639] +++ exited with 0 +++
[pid 16638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16640 attached
 <unfinished ...>
[pid 16640] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16640
[pid 16640] setpgid(0, 0)               = 0
[pid 16640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16640] write(3, "1000", 4)         = 4
[pid 16640] close(3)                    = 0
[pid 16640] write(1, "executing program\n", 18executing program
) = 18
[pid 16640] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16640] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16640] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16640] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16640] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16640] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16640] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16641 attached
 => {parent_tid=[16641]}, 88) = 16641
[pid 16641] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16641] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16640] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16641] <... futex resumed>)        = 0
[pid 16641] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16641] <... futex resumed>)        = 0
[pid 16641] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16641] <... futex resumed>)        = 0
[pid 16641] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16640] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16641] <... futex resumed>)        = 0
[pid 16640] <... futex resumed>)        = 1
[pid 16641] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16640] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16641] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16641] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16641] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16640] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16640] exit_group(0)               = ?
[pid 16641] <... futex resumed>)        = ?
[pid 16641] +++ exited with 0 +++
[pid 16640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16642
./strace-static-x86_64: Process 16642 attached
[pid 16642] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16642] setpgid(0, 0)               = 0
[pid 16642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16642] write(3, "1000", 4)         = 4
[pid 16642] close(3)                    = 0
[pid 16642] write(1, "executing program\n", 18executing program
) = 18
[pid 16642] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16642] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16642] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16642] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16642] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16642] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16642] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16643 attached
 => {parent_tid=[16643]}, 88) = 16643
[pid 16643] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16643] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16643] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16642] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16643] <... futex resumed>)        = 0
[pid 16643] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16643] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16643] <... futex resumed>)        = 0
[pid 16643] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16643] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16643] <... futex resumed>)        = 0
[pid 16642] <... futex resumed>)        = 1
[pid 16643] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16643] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16642] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16643] <... futex resumed>)        = 0
[pid 16643] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16642] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16643] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16643] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16643] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16642] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16642] exit_group(0)               = ?
[pid 16643] <... futex resumed>)        = ?
[pid 16643] +++ exited with 0 +++
[pid 16642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16644
./strace-static-x86_64: Process 16644 attached
[pid 16644] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16644] setpgid(0, 0)               = 0
[pid 16644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16644] write(3, "1000", 4)         = 4
[pid 16644] close(3)                    = 0
[pid 16644] write(1, "executing program\n", 18executing program
) = 18
[pid 16644] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16644] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16644] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16644] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16644] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16644] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16644] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16645]}, 88) = 16645
[pid 16644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16645 attached
 <unfinished ...>
[pid 16645] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16645] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16644] <... futex resumed>)        = 0
[pid 16644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16645] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16644] <... futex resumed>)        = 0
[pid 16644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16645] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16644] <... futex resumed>)        = 0
[pid 16644] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16644] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16645] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16645] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16644] <... futex resumed>)        = 0
[pid 16644] exit_group(0)               = ?
[pid 16645] +++ exited with 0 +++
[pid 16644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16646
./strace-static-x86_64: Process 16646 attached
[pid 16646] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16646] setpgid(0, 0)               = 0
[pid 16646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16646] write(3, "1000", 4)         = 4
[pid 16646] close(3)                    = 0
[pid 16646] write(1, "executing program\n", 18executing program
) = 18
[pid 16646] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16646] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16646] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16646] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16646] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16646] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16646] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16647 attached
 => {parent_tid=[16647]}, 88) = 16647
[pid 16647] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16647] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16647] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16646] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16647] <... futex resumed>)        = 0
[pid 16646] <... futex resumed>)        = 1
[pid 16647] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16647] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16647] <... futex resumed>)        = 0
[pid 16647] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16647] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16647] <... futex resumed>)        = 0
[pid 16646] <... futex resumed>)        = 1
[pid 16647] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16647] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16646] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16647] <... futex resumed>)        = 0
[pid 16647] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16646] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16647] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16647] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16647] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16646] exit_group(0)               = ?
[pid 16647] <... futex resumed>)        = ?
[pid 16647] +++ exited with 0 +++
[pid 16646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16648 attached
, child_tidptr=0x55557060c690) = 16648
[pid 16648] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16648] setpgid(0, 0)               = 0
[pid 16648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16648] write(3, "1000", 4)         = 4
[pid 16648] close(3)                    = 0
[pid 16648] write(1, "executing program\n", 18executing program
) = 18
[pid 16648] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16648] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16648] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16648] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16648] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16648] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16648] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16649 attached
 => {parent_tid=[16649]}, 88) = 16649
[pid 16649] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16649] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16648] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16649] <... futex resumed>)        = 0
[pid 16648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16649] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16648] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16649] <... futex resumed>)        = 0
[pid 16649] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16648] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16649] <... futex resumed>)        = 0
[pid 16649] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16648] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16648] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16649] <... futex resumed>)        = 0
[pid 16649] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16648] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16649] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16649] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16649] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16648] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16648] exit_group(0)               = ?
[pid 16649] <... futex resumed>)        = ?
[pid 16649] +++ exited with 0 +++
[pid 16648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16650 attached
, child_tidptr=0x55557060c690) = 16650
[pid 16650] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16650] setpgid(0, 0)               = 0
[pid 16650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16650] write(3, "1000", 4)         = 4
[pid 16650] close(3)                    = 0
[pid 16650] write(1, "executing program\n", 18executing program
) = 18
[pid 16650] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16650] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16650] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16650] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16650] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16650] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16650] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16651]}, 88) = 16651
[pid 16650] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16651 attached
 <unfinished ...>
[pid 16651] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16651] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16651] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16650] <... futex resumed>)        = 0
[pid 16650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16651] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16650] <... futex resumed>)        = 0
[pid 16650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16651] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16650] <... futex resumed>)        = 0
[pid 16650] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16650] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16651] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16651] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16650] <... futex resumed>)        = 0
[pid 16650] exit_group(0)               = ?
[pid 16651] +++ exited with 0 +++
[pid 16650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16652 attached
 <unfinished ...>
[pid 16652] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16652] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16652
[pid 16652] <... prctl resumed>)        = 0
[pid 16652] setpgid(0, 0)               = 0
[pid 16652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16652] write(3, "1000", 4)         = 4
[pid 16652] close(3)                    = 0
[pid 16652] write(1, "executing program\n", 18executing program
) = 18
[pid 16652] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16652] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16652] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16652] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16652] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16652] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16652] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16653 attached
 => {parent_tid=[16653]}, 88) = 16653
[pid 16653] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16653] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16652] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16653] <... futex resumed>)        = 0
[pid 16653] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16653] <... futex resumed>)        = 0
[pid 16653] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16653] <... futex resumed>)        = 0
[pid 16652] <... futex resumed>)        = 1
[pid 16653] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16652] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16653] <... futex resumed>)        = 0
[pid 16653] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16653] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16653] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16652] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16652] exit_group(0)               = ?
[pid 16653] <... futex resumed>)        = ?
[pid 16653] +++ exited with 0 +++
[pid 16652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16654
./strace-static-x86_64: Process 16654 attached
[pid 16654] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16654] setpgid(0, 0)               = 0
[pid 16654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16654] write(3, "1000", 4)         = 4
[pid 16654] close(3)                    = 0
executing program
[pid 16654] write(1, "executing program\n", 18) = 18
[pid 16654] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16654] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16654] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16654] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16654] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16654] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16654] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16655 attached
 <unfinished ...>
[pid 16655] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16655] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16654] <... clone3 resumed> => {parent_tid=[16655]}, 88) = 16655
[pid 16654] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16655] <... futex resumed>)        = 0
[pid 16655] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16655] <... futex resumed>)        = 0
[pid 16654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16655] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16654] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16655] <... futex resumed>)        = 0
[pid 16655] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16654] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16655] <... futex resumed>)        = 0
[pid 16655] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16654] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16655] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16655] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16654] <... futex resumed>)        = 0
[pid 16655] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16654] exit_group(0)               = ?
[pid 16655] <... futex resumed>)        = ?
[pid 16655] +++ exited with 0 +++
[pid 16654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16656
./strace-static-x86_64: Process 16656 attached
[pid 16656] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16656] setpgid(0, 0)               = 0
[pid 16656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16656] write(3, "1000", 4)         = 4
[pid 16656] close(3)                    = 0
[pid 16656] write(1, "executing program\n", 18executing program
) = 18
[pid 16656] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16656] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16656] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16656] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16656] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16656] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16656] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16657 attached
 => {parent_tid=[16657]}, 88) = 16657
[pid 16657] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16657] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16656] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16657] <... futex resumed>)        = 0
[pid 16656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16657] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16656] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16657] <... futex resumed>)        = 0
[pid 16657] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16657] <... futex resumed>)        = 0
[pid 16656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16657] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16656] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16656] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16657] <... futex resumed>)        = 0
[pid 16657] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16657] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16657] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16656] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16656] exit_group(0)               = ?
[pid 16657] <... futex resumed>)        = ?
[pid 16657] +++ exited with 0 +++
[pid 16656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16658
./strace-static-x86_64: Process 16658 attached
[pid 16658] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16658] setpgid(0, 0)               = 0
[pid 16658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16658] write(3, "1000", 4)         = 4
[pid 16658] close(3executing program
)                    = 0
[pid 16658] write(1, "executing program\n", 18) = 18
[pid 16658] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16658] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16658] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16658] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16658] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16658] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16658] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16659 attached
 <unfinished ...>
[pid 16659] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16658] <... clone3 resumed> => {parent_tid=[16659]}, 88) = 16659
[pid 16658] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16659] <... futex resumed>)        = 0
[pid 16658] <... futex resumed>)        = 1
[pid 16659] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16659] <... futex resumed>)        = 0
[pid 16658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16659] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16658] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16659] <... futex resumed>)        = 0
[pid 16658] <... futex resumed>)        = 1
[pid 16659] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16658] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16659] <... futex resumed>)        = 0
[pid 16658] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16659] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16659] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16658] <... futex resumed>)        = 0
[pid 16659] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16658] exit_group(0)               = ?
[pid 16659] <... futex resumed>)        = ?
[pid 16659] +++ exited with 0 +++
[pid 16658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16660 attached
, child_tidptr=0x55557060c690) = 16660
[pid 16660] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16660] setpgid(0, 0)               = 0
[pid 16660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16660] write(3, "1000", 4)         = 4
[pid 16660] close(3executing program
)                    = 0
[pid 16660] write(1, "executing program\n", 18) = 18
[pid 16660] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16660] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16660] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16660] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16660] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16660] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16660] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16661 attached
 <unfinished ...>
[pid 16661] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16661] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16660] <... clone3 resumed> => {parent_tid=[16661]}, 88) = 16661
[pid 16660] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16661] <... futex resumed>)        = 0
[pid 16661] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16661] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16661] <... futex resumed>)        = 0
[pid 16660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16661] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16661] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16660] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16661] <... futex resumed>)        = 0
[pid 16660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16661] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16661] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16660] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16660] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16661] <... futex resumed>)        = 0
[pid 16660] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16661] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16661] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16660] <... futex resumed>)        = 0
[pid 16661] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16660] exit_group(0)               = ?
[pid 16661] <... futex resumed>)        = ?
[pid 16661] +++ exited with 0 +++
[pid 16660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16662
./strace-static-x86_64: Process 16662 attached
[pid 16662] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16662] setpgid(0, 0)               = 0
[pid 16662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16662] write(3, "1000", 4)         = 4
[pid 16662] close(3)                    = 0
[pid 16662] write(1, "executing program\n", 18executing program
) = 18
[pid 16662] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16662] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16662] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16662] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16662] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16662] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16662] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16663 attached
 => {parent_tid=[16663]}, 88) = 16663
[pid 16663] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16663] <... futex resumed>)        = 0
[pid 16662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16663] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16662] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16663] <... futex resumed>)        = 0
[pid 16663] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16663] <... futex resumed>)        = 0
[pid 16662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16663] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16662] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16662] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16663] <... futex resumed>)        = 0
[pid 16663] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16663] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16663] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16662] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16662] exit_group(0 <unfinished ...>
[pid 16663] <... futex resumed>)        = ?
[pid 16662] <... exit_group resumed>)   = ?
[pid 16663] +++ exited with 0 +++
[pid 16662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16664
./strace-static-x86_64: Process 16664 attached
[pid 16664] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16664] setpgid(0, 0)               = 0
[pid 16664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16664] write(3, "1000", 4)         = 4
[pid 16664] close(3)                    = 0
[pid 16664] write(1, "executing program\n", 18executing program
) = 18
[pid 16664] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16664] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16664] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16664] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16664] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16664] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16664] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16665]}, 88) = 16665
./strace-static-x86_64: Process 16665 attached
[pid 16664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16665] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16665] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16664] <... futex resumed>)        = 0
[pid 16664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16665] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16664] <... futex resumed>)        = 0
[pid 16664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16665] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16664] <... futex resumed>)        = 0
[pid 16664] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16664] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16665] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16665] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16664] <... futex resumed>)        = 0
[pid 16664] exit_group(0)               = ?
[pid 16665] +++ exited with 0 +++
[pid 16664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16666
./strace-static-x86_64: Process 16666 attached
[pid 16666] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16666] setpgid(0, 0)               = 0
[pid 16666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16666] write(3, "1000", 4)         = 4
[pid 16666] close(3)                    = 0
[pid 16666] write(1, "executing program\n", 18executing program
) = 18
[pid 16666] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16666] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16666] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16666] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16666] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16666] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16666] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16667 attached
 => {parent_tid=[16667]}, 88) = 16667
[pid 16667] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16667] <... futex resumed>)        = 0
[pid 16667] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16667] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16667] <... futex resumed>)        = 0
[pid 16667] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16667] <... futex resumed>)        = 0
[pid 16667] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16666] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16667] <... futex resumed>)        = 0
[pid 16667] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16667] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16667] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16666] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16666] exit_group(0)               = ?
[pid 16667] <... futex resumed>)        = ?
[pid 16667] +++ exited with 0 +++
[pid 16666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16668
./strace-static-x86_64: Process 16668 attached
[pid 16668] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16668] setpgid(0, 0)               = 0
[pid 16668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16668] write(3, "1000", 4)         = 4
[pid 16668] close(3)                    = 0
[pid 16668] write(1, "executing program\n", 18executing program
) = 18
[pid 16668] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16668] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16668] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16668] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16668] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16668] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16668] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16669]}, 88) = 16669
[pid 16668] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16669 attached
 <unfinished ...>
[pid 16669] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16669] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16669] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16668] <... futex resumed>)        = 0
[pid 16668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16669] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16668] <... futex resumed>)        = 0
[pid 16668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16669] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16668] <... futex resumed>)        = 0
[pid 16668] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16668] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16669] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16669] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16668] <... futex resumed>)        = 0
[pid 16668] exit_group(0)               = ?
[pid 16669] +++ exited with 0 +++
[pid 16668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16670 attached
 <unfinished ...>
[pid 16670] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16670] setpgid(0, 0)               = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16670
[pid 16670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16670] write(3, "1000", 4)         = 4
[pid 16670] close(3)                    = 0
[pid 16670] write(1, "executing program\n", 18executing program
) = 18
[pid 16670] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16670] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16670] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16670] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16670] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16670] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16670] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16671 attached
 => {parent_tid=[16671]}, 88) = 16671
[pid 16671] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16671] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16670] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16671] <... futex resumed>)        = 0
[pid 16671] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16671] <... futex resumed>)        = 0
[pid 16671] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16671] <... futex resumed>)        = 0
[pid 16671] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16670] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16671] <... futex resumed>)        = 0
[pid 16671] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16670] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16671] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16671] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16671] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16670] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16670] exit_group(0)               = ?
[pid 16671] <... futex resumed>)        = ?
[pid 16671] +++ exited with 0 +++
[pid 16670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16672
./strace-static-x86_64: Process 16672 attached
[pid 16672] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16672] setpgid(0, 0)               = 0
[pid 16672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16672] write(3, "1000", 4)         = 4
[pid 16672] close(3executing program
)                    = 0
[pid 16672] write(1, "executing program\n", 18) = 18
[pid 16672] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16672] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16672] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16672] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16672] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16672] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16672] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16673 attached
 <unfinished ...>
[pid 16673] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16673] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16673] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16672] <... clone3 resumed> => {parent_tid=[16673]}, 88) = 16673
[pid 16672] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16673] <... futex resumed>)        = 0
[pid 16673] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16673] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16673] <... futex resumed>)        = 0
[pid 16672] <... futex resumed>)        = 1
[pid 16673] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16673] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16673] <... futex resumed>)        = 0
[pid 16672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16673] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16672] <... futex resumed>)        = 0
[pid 16672] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16672] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16673] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16673] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16673] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16672] <... futex resumed>)        = 0
[pid 16672] exit_group(0)               = ?
[pid 16673] <... futex resumed>)        = ?
[pid 16673] +++ exited with 0 +++
[pid 16672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16674
./strace-static-x86_64: Process 16674 attached
[pid 16674] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16674] setpgid(0, 0)               = 0
[pid 16674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16674] write(3, "1000", 4)         = 4
[pid 16674] close(3)                    = 0
[pid 16674] write(1, "executing program\n", 18executing program
) = 18
[pid 16674] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16674] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16674] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16674] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16674] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16674] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16674] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16675 attached
 => {parent_tid=[16675]}, 88) = 16675
[pid 16675] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16675] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16675] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16674] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16675] <... futex resumed>)        = 0
[pid 16674] <... futex resumed>)        = 1
[pid 16675] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16675] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16675] <... futex resumed>)        = 0
[pid 16675] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16675] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16675] <... futex resumed>)        = 0
[pid 16674] <... futex resumed>)        = 1
[pid 16675] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16675] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16674] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16675] <... futex resumed>)        = 0
[pid 16675] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16674] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16675] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16675] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16675] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16674] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16674] exit_group(0)               = ?
[pid 16675] <... futex resumed>)        = ?
[pid 16675] +++ exited with 0 +++
[pid 16674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16676 attached
 <unfinished ...>
[pid 16676] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid   342] <... clone resumed>, child_tidptr=0x55557060c690) = 16676
[pid 16676] setpgid(0, 0)               = 0
[pid 16676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16676] write(3, "1000", 4)         = 4
[pid 16676] close(3)                    = 0
[pid 16676] write(1, "executing program\n", 18executing program
) = 18
[pid 16676] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16676] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16676] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16676] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16676] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16676] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16676] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16677 attached
 => {parent_tid=[16677]}, 88) = 16677
[pid 16677] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16677] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16676] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16677] <... futex resumed>)        = 0
[pid 16676] <... futex resumed>)        = 1
[pid 16677] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16677] <... futex resumed>)        = 0
[pid 16677] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16677] <... futex resumed>)        = 0
[pid 16676] <... futex resumed>)        = 1
[pid 16677] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16676] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16677] <... futex resumed>)        = 0
[pid 16677] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16676] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16677] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16677] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16677] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16676] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16676] exit_group(0)               = ?
[pid 16677] <... futex resumed>)        = ?
[pid 16677] +++ exited with 0 +++
[pid 16676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16676, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16678
./strace-static-x86_64: Process 16678 attached
[pid 16678] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16678] setpgid(0, 0)               = 0
[pid 16678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16678] write(3, "1000", 4)         = 4
[pid 16678] close(3)                    = 0
[pid 16678] write(1, "executing program\n", 18executing program
) = 18
[pid 16678] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16678] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16678] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16678] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16678] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16678] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16678] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16679 attached
 => {parent_tid=[16679]}, 88) = 16679
[pid 16679] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16678] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16679] <... set_robust_list resumed>) = 0
[pid 16678] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16679] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16679] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16678] <... futex resumed>)        = 0
[pid 16678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16679] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16678] <... futex resumed>)        = 0
[pid 16679] <... futex resumed>)        = 1
[pid 16678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16679] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16678] <... futex resumed>)        = 0
[pid 16678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16679] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16678] <... futex resumed>)        = 0
[pid 16678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16679] <... futex resumed>)        = 1
[pid 16679] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16678] <... futex resumed>)        = 0
[pid 16678] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16678] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16679] <... futex resumed>)        = 1
[pid 16679] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16679] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16678] <... futex resumed>)        = 0
[pid 16678] exit_group(0)               = ?
[pid 16679] <... futex resumed>)        = ?
[pid 16679] +++ exited with 0 +++
[pid 16678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16680 attached
, child_tidptr=0x55557060c690) = 16680
[pid 16680] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16680] setpgid(0, 0)               = 0
[pid 16680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16680] write(3, "1000", 4)         = 4
[pid 16680] close(3)                    = 0
[pid 16680] write(1, "executing program\n", 18executing program
) = 18
[pid 16680] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16680] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16680] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16680] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16680] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16680] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16680] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16681]}, 88) = 16681
[pid 16680] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16681 attached
 <unfinished ...>
[pid 16681] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16681] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16681] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16680] <... futex resumed>)        = 0
[pid 16680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16681] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16680] <... futex resumed>)        = 0
[pid 16680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16681] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16680] <... futex resumed>)        = 0
[pid 16680] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16680] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16681] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16681] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16680] <... futex resumed>)        = 0
[pid 16680] exit_group(0)               = ?
[pid 16681] +++ exited with 0 +++
[pid 16680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16682 attached
, child_tidptr=0x55557060c690) = 16682
[pid 16682] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16682] setpgid(0, 0)               = 0
[pid 16682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16682] write(3, "1000", 4)         = 4
[pid 16682] close(3)                    = 0
[pid 16682] write(1, "executing program\n", 18executing program
) = 18
[pid 16682] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16682] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16682] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16682] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16682] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16682] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16682] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16683 attached
 => {parent_tid=[16683]}, 88) = 16683
[pid 16683] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16683] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16683] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16682] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16683] <... futex resumed>)        = 0
[pid 16683] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16683] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16683] <... futex resumed>)        = 0
[pid 16683] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16683] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16683] <... futex resumed>)        = 0
[pid 16683] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16683] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16682] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16683] <... futex resumed>)        = 0
[pid 16683] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16683] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16683] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16682] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16682] exit_group(0)               = ?
[pid 16683] <... futex resumed>)        = ?
[pid 16683] +++ exited with 0 +++
[pid 16682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16684
./strace-static-x86_64: Process 16684 attached
[pid 16684] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16684] setpgid(0, 0)               = 0
[pid 16684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16684] write(3, "1000", 4)         = 4
[pid 16684] close(3)                    = 0
[pid 16684] write(1, "executing program\n", 18executing program
) = 18
[pid 16684] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16684] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16684] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16684] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16684] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16684] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16684] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16685 attached
 => {parent_tid=[16685]}, 88) = 16685
[pid 16685] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16684] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16685] <... set_robust_list resumed>) = 0
[pid 16685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16685] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16684] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16685] <... futex resumed>)        = 0
[pid 16684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16685] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16685] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16685] <... futex resumed>)        = 0
[pid 16684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16685] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16685] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16685] <... futex resumed>)        = 0
[pid 16685] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16685] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16684] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16685] <... futex resumed>)        = 0
[pid 16684] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16685] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16685] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16684] <... futex resumed>)        = 0
[pid 16685] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16684] exit_group(0)               = ?
[pid 16685] <... futex resumed>)        = ?
[pid 16685] +++ exited with 0 +++
[pid 16684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16686 attached
, child_tidptr=0x55557060c690) = 16686
[pid 16686] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16686] setpgid(0, 0)               = 0
[pid 16686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16686] write(3, "1000", 4)         = 4
[pid 16686] close(3)                    = 0
executing program
[pid 16686] write(1, "executing program\n", 18) = 18
[pid 16686] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16686] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16686] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16686] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16686] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16686] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16686] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16687]}, 88) = 16687
[pid 16686] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 16687 attached
NULL, 8) = 0
[pid 16687] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16687] <... set_robust_list resumed>) = 0
[pid 16686] <... futex resumed>)        = 0
[pid 16687] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16687] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16687] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16686] <... futex resumed>)        = 0
[pid 16686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16687] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16686] <... futex resumed>)        = 0
[pid 16686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16687] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16686] <... futex resumed>)        = 0
[pid 16686] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16686] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16687] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16687] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16687] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16686] <... futex resumed>)        = 0
[pid 16686] exit_group(0)               = ?
[pid 16687] <... futex resumed>)        = ?
[pid 16687] +++ exited with 0 +++
[pid 16686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16688
./strace-static-x86_64: Process 16688 attached
[pid 16688] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16688] setpgid(0, 0)               = 0
[pid 16688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16688] write(3, "1000", 4)         = 4
[pid 16688] close(3)                    = 0
[pid 16688] write(1, "executing program\n", 18executing program
) = 18
[pid 16688] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16688] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16688] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16688] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16688] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16688] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16688] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16689 attached
 => {parent_tid=[16689]}, 88) = 16689
[pid 16689] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16689] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16689] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16688] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16689] <... futex resumed>)        = 0
[pid 16688] <... futex resumed>)        = 1
[pid 16689] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16689] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16689] <... futex resumed>)        = 0
[pid 16688] <... futex resumed>)        = 1
[pid 16689] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16689] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16689] <... futex resumed>)        = 0
[pid 16689] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16689] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16689] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16688] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16688] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16689] <... futex resumed>)        = 0
[pid 16688] <... futex resumed>)        = 1
[pid 16689] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16688] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16689] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16689] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16689] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16688] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16688] exit_group(0)               = ?
[pid 16689] <... futex resumed>)        = ?
[pid 16689] +++ exited with 0 +++
[pid 16688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16690 attached
, child_tidptr=0x55557060c690) = 16690
[pid 16690] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16690] setpgid(0, 0)               = 0
[pid 16690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16690] write(3, "1000", 4)         = 4
[pid 16690] close(3executing program
)                    = 0
[pid 16690] write(1, "executing program\n", 18) = 18
[pid 16690] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16690] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16690] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16690] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16690] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16690] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16690] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16691 attached
 <unfinished ...>
[pid 16691] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16690] <... clone3 resumed> => {parent_tid=[16691]}, 88) = 16691
[pid 16691] <... set_robust_list resumed>) = 0
[pid 16690] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16691] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16690] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16691] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16691] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16690] <... futex resumed>)        = 0
[pid 16691] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16691] <... futex resumed>)        = 0
[pid 16690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16691] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16690] <... futex resumed>)        = 0
[pid 16691] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16691] <... futex resumed>)        = 0
[pid 16690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16691] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16690] <... futex resumed>)        = 0
[pid 16691] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16691] <... futex resumed>)        = 0
[pid 16690] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16691] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16690] <... futex resumed>)        = 0
[pid 16691] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16690] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16691] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16690] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16691] <... futex resumed>)        = 0
[pid 16690] exit_group(0 <unfinished ...>
[pid 16691] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16690] <... exit_group resumed>)   = ?
[pid 16691] <... futex resumed>)        = ?
[pid 16691] +++ exited with 0 +++
[pid 16690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16692
./strace-static-x86_64: Process 16692 attached
[pid 16692] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16692] setpgid(0, 0)               = 0
[pid 16692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16692] write(3, "1000", 4)         = 4
[pid 16692] close(3)                    = 0
[pid 16692] write(1, "executing program\n", 18executing program
) = 18
[pid 16692] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16692] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16692] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16692] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16692] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16692] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16692] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16693 attached
 => {parent_tid=[16693]}, 88) = 16693
[pid 16693] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16693] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16693] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16692] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16693] <... futex resumed>)        = 0
[pid 16693] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16693] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16693] <... futex resumed>)        = 0
[pid 16693] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16693] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16693] <... futex resumed>)        = 0
[pid 16693] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16693] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16692] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16693] <... futex resumed>)        = 0
[pid 16693] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16692] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16693] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16693] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16693] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16692] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16692] exit_group(0)               = ?
[pid 16693] <... futex resumed>)        = ?
[pid 16693] +++ exited with 0 +++
[pid 16692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16692, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16694 attached
, child_tidptr=0x55557060c690) = 16694
[pid 16694] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16694] setpgid(0, 0)               = 0
[pid 16694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16694] write(3, "1000", 4)         = 4
[pid 16694] close(3executing program
)                    = 0
[pid 16694] write(1, "executing program\n", 18) = 18
[pid 16694] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16694] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16694] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16694] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16694] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16694] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16694] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16695 attached
 => {parent_tid=[16695]}, 88) = 16695
[pid 16695] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16694] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16695] <... set_robust_list resumed>) = 0
[pid 16694] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16695] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16695] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16694] <... futex resumed>)        = 0
[pid 16695] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16695] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16694] <... futex resumed>)        = 0
[pid 16694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16695] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16694] <... futex resumed>)        = 0
[pid 16695] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16695] <... futex resumed>)        = 0
[pid 16694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16695] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16695] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16694] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16694] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16695] <... futex resumed>)        = 0
[pid 16695] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16694] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16695] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16695] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16695] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16694] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16694] exit_group(0)               = ?
[pid 16695] <... futex resumed>)        = ?
[pid 16695] +++ exited with 0 +++
[pid 16694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16696
./strace-static-x86_64: Process 16696 attached
[pid 16696] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16696] setpgid(0, 0)               = 0
[pid 16696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16696] write(3, "1000", 4)         = 4
[pid 16696] close(3)                    = 0
executing program
[pid 16696] write(1, "executing program\n", 18) = 18
[pid 16696] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16696] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16696] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16696] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16696] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16696] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16696] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16697 attached
 <unfinished ...>
[pid 16697] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16697] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16696] <... clone3 resumed> => {parent_tid=[16697]}, 88) = 16697
[pid 16696] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16697] <... futex resumed>)        = 0
[pid 16697] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16697] <... futex resumed>)        = 0
[pid 16697] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16697] <... futex resumed>)        = 0
[pid 16696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16697] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16696] <... futex resumed>)        = 0
[pid 16697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16696] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16697] <... futex resumed>)        = 0
[pid 16696] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16697] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16697] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16696] <... futex resumed>)        = 0
[pid 16697] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16696] exit_group(0)               = ?
[pid 16697] <... futex resumed>)        = ?
[pid 16697] +++ exited with 0 +++
[pid 16696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16698
./strace-static-x86_64: Process 16698 attached
[pid 16698] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16698] setpgid(0, 0)               = 0
[pid 16698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16698] write(3, "1000", 4)         = 4
[pid 16698] close(3)                    = 0
[pid 16698] write(1, "executing program\n", 18executing program
) = 18
[pid 16698] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16698] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16698] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16698] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16698] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16698] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16698] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16699 attached
 => {parent_tid=[16699]}, 88) = 16699
[pid 16699] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16699] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16698] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16699] <... futex resumed>)        = 0
[pid 16699] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16699] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16698] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16699] <... futex resumed>)        = 0
[pid 16699] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16698] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16699] <... futex resumed>)        = 0
[pid 16698] <... futex resumed>)        = 1
[pid 16699] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16698] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16699] <... futex resumed>)        = 0
[pid 16698] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16699] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16699] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16699] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16698] <... futex resumed>)        = 0
[pid 16698] exit_group(0)               = ?
[pid 16699] <... futex resumed>)        = ?
[pid 16699] +++ exited with 0 +++
[pid 16698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16698, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16700 attached
, child_tidptr=0x55557060c690) = 16700
[pid 16700] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16700] setpgid(0, 0)               = 0
[pid 16700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16700] write(3, "1000", 4)         = 4
[pid 16700] close(3)                    = 0
executing program
[pid 16700] write(1, "executing program\n", 18) = 18
[pid 16700] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16700] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16700] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16700] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16700] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16700] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16700] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16701 attached
 => {parent_tid=[16701]}, 88) = 16701
[pid 16701] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16700] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16701] <... set_robust_list resumed>) = 0
[pid 16700] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16701] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16701] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16700] <... futex resumed>)        = 0
[pid 16701] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16701] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16700] <... futex resumed>)        = 0
[pid 16700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16701] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16700] <... futex resumed>)        = 0
[pid 16700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16701] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16700] <... futex resumed>)        = 0
[pid 16700] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16700] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16701] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16701] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16700] <... futex resumed>)        = 0
[pid 16700] exit_group(0)               = ?
[pid 16701] +++ exited with 0 +++
[pid 16700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16702
./strace-static-x86_64: Process 16702 attached
[pid 16702] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16702] setpgid(0, 0)               = 0
[pid 16702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16702] write(3, "1000", 4)         = 4
[pid 16702] close(3)                    = 0
[pid 16702] write(1, "executing program\n", 18executing program
) = 18
[pid 16702] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16702] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16702] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16702] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16702] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16702] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16702] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16703]}, 88) = 16703
./strace-static-x86_64: Process 16703 attached
[pid 16703] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16703] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16702] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16703] <... futex resumed>)        = 0
[pid 16703] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16703] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16703] <... futex resumed>)        = 0
[pid 16703] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16703] <... futex resumed>)        = 0
[pid 16702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16703] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16702] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16702] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16703] <... futex resumed>)        = 0
[pid 16702] <... futex resumed>)        = 1
[pid 16703] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16703] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16703] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16702] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16702] exit_group(0)               = ?
[pid 16703] <... futex resumed>)        = ?
[pid 16703] +++ exited with 0 +++
[pid 16702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16704 attached
, child_tidptr=0x55557060c690) = 16704
[pid 16704] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16704] setpgid(0, 0)               = 0
[pid 16704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16704] write(3, "1000", 4)         = 4
executing program
[pid 16704] close(3)                    = 0
[pid 16704] write(1, "executing program\n", 18) = 18
[pid 16704] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16704] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16704] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16704] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16704] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16704] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16704] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16705 attached
 => {parent_tid=[16705]}, 88) = 16705
[pid 16704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16705] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16705] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16704] <... futex resumed>)        = 0
[pid 16704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16705] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16704] <... futex resumed>)        = 0
[pid 16704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16705] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16704] <... futex resumed>)        = 0
[pid 16704] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16704] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16705] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16705] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16704] <... futex resumed>)        = 0
[pid 16704] exit_group(0)               = ?
[pid 16705] +++ exited with 0 +++
[pid 16704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16704, si_uid=0, si_status=0, si_utime=0, si_stime=1} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16706
./strace-static-x86_64: Process 16706 attached
[pid 16706] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16706] setpgid(0, 0)               = 0
[pid 16706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16706] write(3, "1000", 4)         = 4
[pid 16706] close(3)                    = 0
[pid 16706] write(1, "executing program\n", 18executing program
) = 18
[pid 16706] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16706] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16706] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16706] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16706] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16706] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16706] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16707 attached
 => {parent_tid=[16707]}, 88) = 16707
[pid 16707] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16706] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16707] <... set_robust_list resumed>) = 0
[pid 16707] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16707] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16706] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16707] <... futex resumed>)        = 0
[pid 16707] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16707] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16707] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16707] <... futex resumed>)        = 0
[pid 16707] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16707] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16707] <... futex resumed>)        = 0
[pid 16707] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16707] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16706] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16707] <... futex resumed>)        = 0
[pid 16707] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16706] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16707] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16707] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16707] <... futex resumed>)        = 0
[pid 16707] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16706] exit_group(0)               = ?
[pid 16707] <... futex resumed>)        = ?
[pid 16707] +++ exited with 0 +++
[pid 16706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16708 attached
, child_tidptr=0x55557060c690) = 16708
[pid 16708] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16708] setpgid(0, 0)               = 0
[pid 16708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16708] write(3, "1000", 4)         = 4
[pid 16708] close(3)                    = 0
[pid 16708] write(1, "executing program\n", 18executing program
) = 18
[pid 16708] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16708] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16708] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16708] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16708] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16708] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16708] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16709]}, 88) = 16709
[pid 16708] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16709 attached
 <unfinished ...>
[pid 16709] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16709] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16709] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16708] <... futex resumed>)        = 0
[pid 16708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16709] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16708] <... futex resumed>)        = 0
[pid 16708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16709] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16708] <... futex resumed>)        = 0
[pid 16708] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16708] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16709] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16709] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16708] <... futex resumed>)        = 0
[pid 16708] exit_group(0)               = ?
[pid 16709] +++ exited with 0 +++
[pid 16708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16710 attached
, child_tidptr=0x55557060c690) = 16710
[pid 16710] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16710] setpgid(0, 0)               = 0
[pid 16710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16710] write(3, "1000", 4)         = 4
[pid 16710] close(3)                    = 0
[pid 16710] write(1, "executing program\n", 18executing program
) = 18
[pid 16710] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16710] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16710] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16710] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16710] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16710] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16710] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16711 attached
 => {parent_tid=[16711]}, 88) = 16711
[pid 16711] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16711] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16711] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16710] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16711] <... futex resumed>)        = 0
[pid 16711] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16711] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16711] <... futex resumed>)        = 0
[pid 16711] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16711] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16711] <... futex resumed>)        = 0
[pid 16711] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16711] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16710] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16711] <... futex resumed>)        = 0
[pid 16711] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16710] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16711] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16711] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16711] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16710] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16710] exit_group(0)               = ?
[pid 16711] <... futex resumed>)        = ?
[pid 16711] +++ exited with 0 +++
[pid 16710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16712 attached
, child_tidptr=0x55557060c690) = 16712
[pid 16712] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16712] setpgid(0, 0)               = 0
[pid 16712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16712] write(3, "1000", 4)         = 4
[pid 16712] close(3)                    = 0
[pid 16712] write(1, "executing program\n", 18executing program
) = 18
[pid 16712] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16712] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16712] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16712] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16712] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16712] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16712] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16713]}, 88) = 16713
[pid 16712] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16713 attached
 <unfinished ...>
[pid 16713] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16713] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16713] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16712] <... futex resumed>)        = 0
[pid 16712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16713] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16712] <... futex resumed>)        = 0
[pid 16712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16713] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16713] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16712] <... futex resumed>)        = 0
[pid 16712] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16712] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16713] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16713] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16712] <... futex resumed>)        = 0
[pid 16712] exit_group(0 <unfinished ...>
[pid 16713] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16712] <... exit_group resumed>)   = ?
[pid 16713] <... futex resumed>)        = ?
[pid 16713] +++ exited with 0 +++
[pid 16712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16714 attached
, child_tidptr=0x55557060c690) = 16714
[pid 16714] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16714] setpgid(0, 0)               = 0
[pid 16714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16714] write(3, "1000", 4)         = 4
[pid 16714] close(3)                    = 0
[pid 16714] write(1, "executing program\n", 18executing program
) = 18
[pid 16714] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16714] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16714] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16714] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16714] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16714] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16714] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16715 attached
 => {parent_tid=[16715]}, 88) = 16715
[pid 16715] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16715] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16715] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16714] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16715] <... futex resumed>)        = 0
[pid 16715] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16715] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16715] <... futex resumed>)        = 0
[pid 16715] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16715] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16715] <... futex resumed>)        = 0
[pid 16715] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16715] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16714] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16715] <... futex resumed>)        = 0
[pid 16714] <... futex resumed>)        = 1
[pid 16715] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16715] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16714] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16715] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16714] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16714] exit_group(0)               = ?
[pid 16715] <... futex resumed>)        = ?
[pid 16715] +++ exited with 0 +++
[pid 16714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16716 attached
, child_tidptr=0x55557060c690) = 16716
[pid 16716] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16716] setpgid(0, 0)               = 0
[pid 16716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16716] write(3, "1000", 4)         = 4
[pid 16716] close(3)                    = 0
[pid 16716] write(1, "executing program\n", 18executing program
) = 18
[pid 16716] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16716] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16716] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16716] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16716] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16716] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16716] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16717]}, 88) = 16717
[pid 16716] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16717 attached
 <unfinished ...>
[pid 16717] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16717] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16717] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16716] <... futex resumed>)        = 0
[pid 16716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16717] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16716] <... futex resumed>)        = 0
[pid 16716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16717] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16716] <... futex resumed>)        = 0
[pid 16716] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16716] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16717] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16717] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16716] <... futex resumed>)        = 0
[pid 16716] exit_group(0)               = ?
[pid 16717] +++ exited with 0 +++
[pid 16716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16718 attached
, child_tidptr=0x55557060c690) = 16718
[pid 16718] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16718] setpgid(0, 0)               = 0
[pid 16718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16718] write(3, "1000", 4)         = 4
[pid 16718] close(3)                    = 0
[pid 16718] write(1, "executing program\n", 18executing program
) = 18
[pid 16718] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16718] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16718] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16718] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16718] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16718] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16718] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16719 attached
 => {parent_tid=[16719]}, 88) = 16719
[pid 16719] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16719] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16719] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16718] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16719] <... futex resumed>)        = 0
[pid 16719] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16719] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16719] <... futex resumed>)        = 0
[pid 16719] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16719] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16719] <... futex resumed>)        = 0
[pid 16719] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16719] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16718] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16719] <... futex resumed>)        = 0
[pid 16718] <... futex resumed>)        = 1
[pid 16718] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16719] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16719] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16719] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16718] <... futex resumed>)        = 0
[pid 16718] exit_group(0)               = ?
[pid 16719] <... futex resumed>)        = ?
[pid 16719] +++ exited with 0 +++
[pid 16718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16720 attached
, child_tidptr=0x55557060c690) = 16720
[pid 16720] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16720] setpgid(0, 0)               = 0
[pid 16720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16720] write(3, "1000", 4)         = 4
[pid 16720] close(3executing program
)                    = 0
[pid 16720] write(1, "executing program\n", 18) = 18
[pid 16720] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16720] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16720] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16720] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16720] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16720] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16720] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16721 attached
 <unfinished ...>
[pid 16721] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16721] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16720] <... clone3 resumed> => {parent_tid=[16721]}, 88) = 16721
[pid 16720] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16721] <... futex resumed>)        = 0
[pid 16721] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16721] <... futex resumed>)        = 0
[pid 16720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16721] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16720] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16721] <... futex resumed>)        = 0
[pid 16720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16721] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16720] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16720] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16720] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16721] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16721] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16720] <... futex resumed>)        = 0
[pid 16721] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16720] exit_group(0)               = ?
[pid 16721] <... futex resumed>)        = ?
[pid 16721] +++ exited with 0 +++
[pid 16720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16722 attached
, child_tidptr=0x55557060c690) = 16722
[pid 16722] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16722] setpgid(0, 0)               = 0
[pid 16722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16722] write(3, "1000", 4)         = 4
[pid 16722] close(3)                    = 0
executing program
[pid 16722] write(1, "executing program\n", 18) = 18
[pid 16722] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16722] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16722] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16722] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16722] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16722] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16722] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16723 attached
 <unfinished ...>
[pid 16723] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16723] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16722] <... clone3 resumed> => {parent_tid=[16723]}, 88) = 16723
[pid 16722] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16723] <... futex resumed>)        = 0
[pid 16723] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16723] <... futex resumed>)        = 0
[pid 16722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16723] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16722] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16723] <... futex resumed>)        = 0
[pid 16722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16723] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16722] <... futex resumed>)        = 0
[pid 16723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16722] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16723] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16722] <... futex resumed>)        = 0
[pid 16722] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16723] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16723] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16722] <... futex resumed>)        = 0
[pid 16723] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16722] exit_group(0)               = ?
[pid 16723] <... futex resumed>)        = ?
[pid 16723] +++ exited with 0 +++
[pid 16722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16724 attached
, child_tidptr=0x55557060c690) = 16724
[pid 16724] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16724] setpgid(0, 0)               = 0
[pid 16724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16724] write(3, "1000", 4)         = 4
[pid 16724] close(3executing program
)                    = 0
[pid 16724] write(1, "executing program\n", 18) = 18
[pid 16724] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16724] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16724] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16724] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16724] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16724] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16724] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16725 attached
 => {parent_tid=[16725]}, 88) = 16725
[pid 16724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16725] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16725] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16724] <... futex resumed>)        = 0
[pid 16724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16725] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16724] <... futex resumed>)        = 0
[pid 16724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16725] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16724] <... futex resumed>)        = 0
[pid 16724] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16725] <... futex resumed>)        = 0
[pid 16724] <... futex resumed>)        = 1
[pid 16724] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16725] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16725] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16724] <... futex resumed>)        = 0
[pid 16725] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16724] exit_group(0)               = ?
[pid 16725] <... futex resumed>)        = ?
[pid 16725] +++ exited with 0 +++
[pid 16724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16726
./strace-static-x86_64: Process 16726 attached
[pid 16726] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16726] setpgid(0, 0)               = 0
[pid 16726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16726] write(3, "1000", 4)         = 4
[pid 16726] close(3)                    = 0
[pid 16726] write(1, "executing program\n", 18executing program
) = 18
[pid 16726] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16726] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16726] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16726] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16726] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16726] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16726] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16727 attached
 => {parent_tid=[16727]}, 88) = 16727
[pid 16727] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16727] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16727] <... futex resumed>)        = 0
[pid 16727] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16727] <... futex resumed>)        = 0
[pid 16726] <... futex resumed>)        = 1
[pid 16727] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16727] <... futex resumed>)        = 0
[pid 16726] <... futex resumed>)        = 1
[pid 16727] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16726] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16727] <... futex resumed>)        = 0
[pid 16727] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16726] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16727] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16727] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16727] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16726] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16726] exit_group(0)               = ?
[pid 16727] <... futex resumed>)        = ?
[pid 16727] +++ exited with 0 +++
[pid 16726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16728 attached
, child_tidptr=0x55557060c690) = 16728
[pid 16728] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16728] setpgid(0, 0)               = 0
[pid 16728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16728] write(3, "1000", 4)         = 4
[pid 16728] close(3)                    = 0
executing program
[pid 16728] write(1, "executing program\n", 18) = 18
[pid 16728] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16728] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16728] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16728] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16728] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16728] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16728] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16729 attached
 <unfinished ...>
[pid 16729] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16728] <... clone3 resumed> => {parent_tid=[16729]}, 88) = 16729
[pid 16729] <... set_robust_list resumed>) = 0
[pid 16729] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16729] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16728] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16729] <... futex resumed>)        = 0
[pid 16728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16729] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16729] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16728] <... futex resumed>)        = 0
[pid 16728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16729] <... futex resumed>)        = 0
[pid 16728] <... futex resumed>)        = 1
[pid 16729] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16729] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16729] <... futex resumed>)        = 0
[pid 16729] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16728] <... futex resumed>)        = 0
[pid 16728] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16728] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16729] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16729] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16728] <... futex resumed>)        = 0
[pid 16729] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16728] exit_group(0)               = ?
[pid 16729] <... futex resumed>)        = ?
[pid 16729] +++ exited with 0 +++
[pid 16728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16728, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16730
./strace-static-x86_64: Process 16730 attached
[pid 16730] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16730] setpgid(0, 0)               = 0
[pid 16730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16730] write(3, "1000", 4)         = 4
[pid 16730] close(3)                    = 0
[pid 16730] write(1, "executing program\n", 18executing program
) = 18
[pid 16730] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16730] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16730] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16730] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16730] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16730] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16730] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16731 attached
 => {parent_tid=[16731]}, 88) = 16731
[pid 16731] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16731] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16731] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16730] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16731] <... futex resumed>)        = 0
[pid 16730] <... futex resumed>)        = 1
[pid 16731] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16731] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16731] <... futex resumed>)        = 0
[pid 16731] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16731] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16731] <... futex resumed>)        = 0
[pid 16731] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16731] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16730] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16731] <... futex resumed>)        = 0
[pid 16730] <... futex resumed>)        = 1
[pid 16730] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16731] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16731] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16731] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16730] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16730] exit_group(0)               = ?
[pid 16731] <... futex resumed>)        = ?
[pid 16731] +++ exited with 0 +++
[pid 16730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16732 attached
, child_tidptr=0x55557060c690) = 16732
[pid 16732] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16732] setpgid(0, 0)               = 0
[pid 16732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16732] write(3, "1000", 4)         = 4
executing program
[pid 16732] close(3)                    = 0
[pid 16732] write(1, "executing program\n", 18) = 18
[pid 16732] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16732] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16732] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16732] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16732] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16732] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16732] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16733 attached
 <unfinished ...>
[pid 16733] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16732] <... clone3 resumed> => {parent_tid=[16733]}, 88) = 16733
[pid 16733] <... set_robust_list resumed>) = 0
[pid 16733] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16733] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16732] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16733] <... futex resumed>)        = 0
[pid 16732] <... futex resumed>)        = 1
[pid 16733] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16733] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16733] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16732] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16733] <... futex resumed>)        = 0
[pid 16732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16733] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16733] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16732] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16733] <... futex resumed>)        = 0
[pid 16733] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16733] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16732] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16733] <... futex resumed>)        = 0
[pid 16732] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16733] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16733] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16732] <... futex resumed>)        = 0
[pid 16733] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16732] exit_group(0)               = ?
[pid 16733] <... futex resumed>)        = ?
[pid 16733] +++ exited with 0 +++
[pid 16732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16734
./strace-static-x86_64: Process 16734 attached
[pid 16734] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16734] setpgid(0, 0)               = 0
[pid 16734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16734] write(3, "1000", 4)         = 4
executing program
[pid 16734] close(3)                    = 0
[pid 16734] write(1, "executing program\n", 18) = 18
[pid 16734] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16734] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16734] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16734] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16734] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16734] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16734] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16735 attached
 => {parent_tid=[16735]}, 88) = 16735
[pid 16735] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16735] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16735] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16734] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16735] <... futex resumed>)        = 0
[pid 16734] <... futex resumed>)        = 1
[pid 16735] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16735] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16735] <... futex resumed>)        = 0
[pid 16735] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16735] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16735] <... futex resumed>)        = 0
[pid 16734] <... futex resumed>)        = 1
[pid 16735] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16735] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16734] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16735] <... futex resumed>)        = 0
[pid 16735] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16734] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16735] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16735] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16735] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16734] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16734] exit_group(0)               = ?
[pid 16735] <... futex resumed>)        = ?
[pid 16735] +++ exited with 0 +++
[pid 16734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16736 attached
, child_tidptr=0x55557060c690) = 16736
[pid 16736] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16736] setpgid(0, 0)               = 0
[pid 16736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16736] write(3, "1000", 4)         = 4
[pid 16736] close(3)                    = 0
[pid 16736] write(1, "executing program\n", 18executing program
) = 18
[pid 16736] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16736] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16736] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16736] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16736] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16736] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16736] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16737]}, 88) = 16737
[pid 16736] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16737 attached
 <unfinished ...>
[pid 16737] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16737] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16737] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16736] <... futex resumed>)        = 0
[pid 16736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16737] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16736] <... futex resumed>)        = 0
[pid 16736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16737] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16736] <... futex resumed>)        = 0
[pid 16736] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16736] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16737] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16737] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16736] <... futex resumed>)        = 0
[pid 16736] exit_group(0)               = ?
[pid 16737] +++ exited with 0 +++
[pid 16736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16738
./strace-static-x86_64: Process 16738 attached
[pid 16738] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16738] setpgid(0, 0)               = 0
[pid 16738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16738] write(3, "1000", 4)         = 4
[pid 16738] close(3)                    = 0
[pid 16738] write(1, "executing program\n", 18executing program
) = 18
[pid 16738] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16738] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16738] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16738] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16738] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16738] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16738] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16739 attached
 => {parent_tid=[16739]}, 88) = 16739
[pid 16739] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16739] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16739] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16738] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16739] <... futex resumed>)        = 0
[pid 16738] <... futex resumed>)        = 1
[pid 16739] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16739] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16739] <... futex resumed>)        = 0
[pid 16738] <... futex resumed>)        = 1
[pid 16739] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16739] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16739] <... futex resumed>)        = 0
[pid 16739] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16739] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16738] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16739] <... futex resumed>)        = 0
[pid 16739] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16739] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16739] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16738] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16738] exit_group(0)               = ?
[pid 16739] <... futex resumed>)        = ?
[pid 16739] +++ exited with 0 +++
[pid 16738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16740 attached
, child_tidptr=0x55557060c690) = 16740
[pid 16740] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16740] setpgid(0, 0)               = 0
[pid 16740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16740] write(3, "1000", 4)         = 4
[pid 16740] close(3executing program
)                    = 0
[pid 16740] write(1, "executing program\n", 18) = 18
[pid 16740] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16740] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16740] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16740] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16740] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16740] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16740] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16741]}, 88) = 16741
./strace-static-x86_64: Process 16741 attached
[pid 16740] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16741] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16741] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16741] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16740] <... futex resumed>)        = 0
[pid 16740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16741] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16740] <... futex resumed>)        = 0
[pid 16740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16741] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16740] <... futex resumed>)        = 0
[pid 16740] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16740] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16741] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16741] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16740] <... futex resumed>)        = 0
[pid 16741] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16740] exit_group(0)               = ?
[pid 16741] <... futex resumed>)        = ?
[pid 16741] +++ exited with 0 +++
[pid 16740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16742
./strace-static-x86_64: Process 16742 attached
[pid 16742] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16742] setpgid(0, 0)               = 0
[pid 16742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16742] write(3, "1000", 4)         = 4
[pid 16742] close(3)                    = 0
[pid 16742] write(1, "executing program\n", 18executing program
) = 18
[pid 16742] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16742] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16742] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16742] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16742] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16742] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16742] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16743 attached
 => {parent_tid=[16743]}, 88) = 16743
[pid 16743] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16743] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16742] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16743] <... futex resumed>)        = 0
[pid 16743] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16743] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16742] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16743] <... futex resumed>)        = 0
[pid 16743] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16743] <... futex resumed>)        = 0
[pid 16743] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16742] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16743] <... futex resumed>)        = 0
[pid 16743] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16743] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16743] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16742] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16742] exit_group(0)               = ?
[pid 16743] <... futex resumed>)        = ?
[pid 16743] +++ exited with 0 +++
[pid 16742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16744 attached
, child_tidptr=0x55557060c690) = 16744
[pid 16744] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16744] setpgid(0, 0)               = 0
[pid 16744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16744] write(3, "1000", 4)         = 4
[pid 16744] close(3)                    = 0
[pid 16744] write(1, "executing program\n", 18executing program
) = 18
[pid 16744] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16744] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16744] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16744] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16744] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16744] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16744] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16745 attached
 => {parent_tid=[16745]}, 88) = 16745
[pid 16745] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16744] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16745] <... set_robust_list resumed>) = 0
[pid 16745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16745] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16744] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16745] <... futex resumed>)        = 0
[pid 16745] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16745] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16745] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16745] <... futex resumed>)        = 0
[pid 16744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16745] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16745] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16744] <... futex resumed>)        = 0
[pid 16744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16745] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16745] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16744] <... futex resumed>)        = 0
[pid 16744] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16744] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16745] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16745] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16744] <... futex resumed>)        = 0
[pid 16744] exit_group(0)               = ?
[pid 16745] +++ exited with 0 +++
[pid 16744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16746
./strace-static-x86_64: Process 16746 attached
[pid 16746] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16746] setpgid(0, 0)               = 0
[pid 16746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16746] write(3, "1000", 4)         = 4
[pid 16746] close(3)                    = 0
[pid 16746] write(1, "executing program\n", 18executing program
) = 18
[pid 16746] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16746] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16746] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16746] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16747]}, 88) = 16747
[pid 16746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16747 attached
 <unfinished ...>
[pid 16747] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16747] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16747] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16746] <... futex resumed>)        = 0
[pid 16746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16747] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16746] <... futex resumed>)        = 0
[pid 16746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16747] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16746] <... futex resumed>)        = 0
[pid 16746] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16746] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16747] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16747] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16746] <... futex resumed>)        = 0
[pid 16747] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16746] exit_group(0)               = ?
[pid 16747] <... futex resumed>)        = ?
[pid 16747] +++ exited with 0 +++
[pid 16746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16746, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16748 attached
, child_tidptr=0x55557060c690) = 16748
[pid 16748] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16748] setpgid(0, 0)               = 0
[pid 16748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16748] write(3, "1000", 4)         = 4
[pid 16748] close(3)                    = 0
[pid 16748] write(1, "executing program\n", 18executing program
) = 18
[pid 16748] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16748] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16748] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16748] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16748] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16748] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16748] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16749 attached
 => {parent_tid=[16749]}, 88) = 16749
[pid 16749] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16748] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16749] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16748] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16749] <... futex resumed>)        = 0
[pid 16749] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16749] <... futex resumed>)        = 0
[pid 16749] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16749] <... futex resumed>)        = 0
[pid 16748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16749] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16748] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16749] <... futex resumed>)        = 0
[pid 16748] <... futex resumed>)        = 1
[pid 16749] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16748] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16749] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16749] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16749] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16748] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16748] exit_group(0)               = ?
[pid 16749] <... futex resumed>)        = ?
[pid 16749] +++ exited with 0 +++
[pid 16748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16750 attached
, child_tidptr=0x55557060c690) = 16750
[pid 16750] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16750] setpgid(0, 0)               = 0
[pid 16750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16750] write(3, "1000", 4)         = 4
[pid 16750] close(3)                    = 0
executing program
[pid 16750] write(1, "executing program\n", 18) = 18
[pid 16750] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16750] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16750] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16750] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16750] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16750] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16750] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16751]}, 88) = 16751
[pid 16750] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16751 attached
 <unfinished ...>
[pid 16751] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16751] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16751] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16750] <... futex resumed>)        = 0
[pid 16750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16751] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16751] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16750] <... futex resumed>)        = 0
[pid 16750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16751] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16751] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16750] <... futex resumed>)        = 0
[pid 16750] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16750] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16751] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16751] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16750] <... futex resumed>)        = 0
[pid 16750] exit_group(0)               = ?
[pid 16751] +++ exited with 0 +++
[pid 16750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16752 attached
, child_tidptr=0x55557060c690) = 16752
[pid 16752] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16752] setpgid(0, 0)               = 0
[pid 16752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16752] write(3, "1000", 4)         = 4
[pid 16752] close(3)                    = 0
[pid 16752] write(1, "executing program\n", 18executing program
) = 18
[pid 16752] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16752] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16752] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16752] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16752] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16752] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16752] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16753 attached
 => {parent_tid=[16753]}, 88) = 16753
[pid 16753] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16753] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16752] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16753] <... futex resumed>)        = 0
[pid 16752] <... futex resumed>)        = 1
[pid 16753] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16753] <... futex resumed>)        = 0
[pid 16753] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16753] <... futex resumed>)        = 0
[pid 16752] <... futex resumed>)        = 1
[pid 16753] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16752] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16753] <... futex resumed>)        = 0
[pid 16752] <... futex resumed>)        = 1
[pid 16753] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16753] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16753] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16752] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16752] exit_group(0)               = ?
[pid 16753] <... futex resumed>)        = ?
[pid 16753] +++ exited with 0 +++
[pid 16752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16754 attached
, child_tidptr=0x55557060c690) = 16754
[pid 16754] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16754] setpgid(0, 0)               = 0
[pid 16754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16754] write(3, "1000", 4)         = 4
[pid 16754] close(3)                    = 0
[pid 16754] write(1, "executing program\n", 18executing program
) = 18
[pid 16754] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16754] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16754] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16754] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16754] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16754] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16754] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16755]}, 88) = 16755
[pid 16754] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16755 attached
 <unfinished ...>
[pid 16755] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16755] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16755] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16755] <... futex resumed>)        = 1
[pid 16754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16755] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16755] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16755] <... futex resumed>)        = 1
[pid 16754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16755] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16755] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16755] <... futex resumed>)        = 1
[pid 16754] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16754] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16755] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16755] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16754] <... futex resumed>)        = 0
[pid 16755] <... futex resumed>)        = 1
[pid 16754] exit_group(0 <unfinished ...>
[pid 16755] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16754] <... exit_group resumed>)   = ?
[pid 16755] <... futex resumed>)        = -1 (errno 18446744073709551414)
[pid 16755] +++ exited with 0 +++
[pid 16754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16756
./strace-static-x86_64: Process 16756 attached
[pid 16756] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16756] setpgid(0, 0)               = 0
[pid 16756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16756] write(3, "1000", 4executing program
)         = 4
[pid 16756] close(3)                    = 0
[pid 16756] write(1, "executing program\n", 18) = 18
[pid 16756] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16756] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16756] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16756] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16756] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16756] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16756] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16757]}, 88) = 16757
[pid 16756] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16757 attached
 <unfinished ...>
[pid 16757] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16757] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16757] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16756] <... futex resumed>)        = 0
[pid 16756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16757] <... futex resumed>)        = 1
[pid 16757] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16756] <... futex resumed>)        = 0
[pid 16756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16757] <... futex resumed>)        = 1
[pid 16757] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16756] <... futex resumed>)        = 0
[pid 16756] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16756] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16757] <... futex resumed>)        = 1
[pid 16757] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16757] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16756] <... futex resumed>)        = 0
[pid 16756] exit_group(0)               = ?
[pid 16757] <... futex resumed>)        = ?
[pid 16757] +++ exited with 0 +++
[pid 16756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDexecuting program
./strace-static-x86_64: Process 16758 attached
, child_tidptr=0x55557060c690) = 16758
[pid 16758] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16758] setpgid(0, 0)               = 0
[pid 16758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16758] write(3, "1000", 4)         = 4
[pid 16758] close(3)                    = 0
[pid 16758] write(1, "executing program\n", 18) = 18
[pid 16758] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16758] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16758] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16758] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16758] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16758] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16758] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16759]}, 88) = 16759
[pid 16758] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16759 attached
 <unfinished ...>
[pid 16759] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16759] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16759] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16758] <... futex resumed>)        = 0
[pid 16758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16759] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16758] <... futex resumed>)        = 0
[pid 16758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16759] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16758] <... futex resumed>)        = 0
[pid 16758] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16758] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16759] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16759] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16758] <... futex resumed>)        = 0
[pid 16758] exit_group(0)               = ?
[pid 16759] +++ exited with 0 +++
[pid 16758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16760 attached
, child_tidptr=0x55557060c690) = 16760
[pid 16760] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16760] setpgid(0, 0)               = 0
[pid 16760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16760] write(3, "1000", 4)         = 4
[pid 16760] close(3)                    = 0
executing program
[pid 16760] write(1, "executing program\n", 18) = 18
[pid 16760] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16760] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16760] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16760] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16760] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16760] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16760] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16761 attached
 => {parent_tid=[16761]}, 88) = 16761
[pid 16761] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16761] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16760] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16761] <... futex resumed>)        = 0
[pid 16760] <... futex resumed>)        = 1
[pid 16761] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16761] <... futex resumed>)        = 0
[pid 16761] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16761] <... futex resumed>)        = 0
[pid 16761] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16761] <... futex resumed>)        = 0
[pid 16761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16760] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16760] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16761] <... futex resumed>)        = 0
[pid 16761] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16760] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16761] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16761] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16761] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16760] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16760] exit_group(0)               = ?
[pid 16761] <... futex resumed>)        = ?
[pid 16761] +++ exited with 0 +++
[pid 16760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16762 attached
, child_tidptr=0x55557060c690) = 16762
[pid 16762] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16762] setpgid(0, 0)               = 0
[pid 16762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16762] write(3, "1000", 4)         = 4
[pid 16762] close(3executing program
)                    = 0
[pid 16762] write(1, "executing program\n", 18) = 18
[pid 16762] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16762] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16762] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16762] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16762] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16762] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16762] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16763 attached
 <unfinished ...>
[pid 16763] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16763] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16763] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16762] <... clone3 resumed> => {parent_tid=[16763]}, 88) = 16763
[pid 16762] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16763] <... futex resumed>)        = 0
[pid 16762] <... futex resumed>)        = 1
[pid 16763] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16763] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16763] <... futex resumed>)        = 0
[pid 16762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16763] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16762] <... futex resumed>)        = 0
[pid 16763] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16763] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16762] <... futex resumed>)        = 0
[pid 16762] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16762] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16763] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16763] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16762] <... futex resumed>)        = 0
[pid 16762] exit_group(0)               = ?
[pid 16763] +++ exited with 0 +++
[pid 16762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16764 attached
, child_tidptr=0x55557060c690) = 16764
[pid 16764] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16764] setpgid(0, 0)               = 0
[pid 16764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16764] write(3, "1000", 4)         = 4
[pid 16764] close(3)                    = 0
[pid 16764] write(1, "executing program\n", 18executing program
) = 18
[pid 16764] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16764] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16764] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16764] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16764] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16764] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16764] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16765]}, 88) = 16765
[pid 16764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16765 attached
 <unfinished ...>
[pid 16765] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16765] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16764] <... futex resumed>)        = 0
[pid 16764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16765] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16764] <... futex resumed>)        = 0
[pid 16764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16765] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16764] <... futex resumed>)        = 0
[pid 16764] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16764] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16765] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16765] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16764] <... futex resumed>)        = 0
[pid 16764] exit_group(0)               = ?
[pid 16765] +++ exited with 0 +++
[pid 16764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16766
./strace-static-x86_64: Process 16766 attached
[pid 16766] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16766] setpgid(0, 0)               = 0
[pid 16766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16766] write(3, "1000", 4)         = 4
executing program
[pid 16766] close(3)                    = 0
[pid 16766] write(1, "executing program\n", 18) = 18
[pid 16766] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16766] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16766] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16766] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16767]}, 88) = 16767
[pid 16766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16767 attached
 <unfinished ...>
[pid 16767] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16767] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16767] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16766] <... futex resumed>)        = 0
[pid 16766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16767] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16766] <... futex resumed>)        = 0
[pid 16766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16767] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16766] <... futex resumed>)        = 0
[pid 16766] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16766] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16767] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16767] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16766] <... futex resumed>)        = 0
[pid 16766] exit_group(0)               = ?
[pid 16767] +++ exited with 0 +++
[pid 16766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16768
./strace-static-x86_64: Process 16768 attached
[pid 16768] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16768] setpgid(0, 0)               = 0
[pid 16768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16768] write(3, "1000", 4)         = 4
[pid 16768] close(3)                    = 0
[pid 16768] write(1, "executing program\n", 18executing program
) = 18
[pid 16768] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16768] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16768] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16768] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16768] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16768] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16768] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16769 attached
 => {parent_tid=[16769]}, 88) = 16769
[pid 16769] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16769] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16768] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16769] <... futex resumed>)        = 0
[pid 16769] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16769] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16768] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16769] <... futex resumed>)        = 0
[pid 16769] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16769] <... futex resumed>)        = 0
[pid 16769] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16768] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16769] <... futex resumed>)        = 0
[pid 16769] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16768] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16769] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16769] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16769] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16768] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16768] exit_group(0)               = ?
[pid 16769] <... futex resumed>)        = ?
[pid 16769] +++ exited with 0 +++
[pid 16768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16770 attached
, child_tidptr=0x55557060c690) = 16770
[pid 16770] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16770] setpgid(0, 0)               = 0
[pid 16770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16770] write(3, "1000", 4)         = 4
[pid 16770] close(3)                    = 0
executing program
[pid 16770] write(1, "executing program\n", 18) = 18
[pid 16770] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16770] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16770] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16770] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16770] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16770] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16770] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16771 attached
 => {parent_tid=[16771]}, 88) = 16771
[pid 16771] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16771] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16771] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16770] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16771] <... futex resumed>)        = 0
[pid 16771] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16771] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16771] <... futex resumed>)        = 0
[pid 16771] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16771] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16771] <... futex resumed>)        = 0
[pid 16771] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16771] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16770] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16771] <... futex resumed>)        = 0
[pid 16771] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16770] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16771] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16771] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16771] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16770] <... futex resumed>)        = 0
[pid 16770] exit_group(0)               = ?
[pid 16771] <... futex resumed>)        = ?
[pid 16771] +++ exited with 0 +++
[pid 16770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16772 attached
, child_tidptr=0x55557060c690) = 16772
[pid 16772] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16772] setpgid(0, 0)               = 0
[pid 16772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16772] write(3, "1000", 4)         = 4
executing program
[pid 16772] close(3)                    = 0
[pid 16772] write(1, "executing program\n", 18) = 18
[pid 16772] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16772] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16772] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16772] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16772] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16772] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16772] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16773 attached
 <unfinished ...>
[pid 16773] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16772] <... clone3 resumed> => {parent_tid=[16773]}, 88) = 16773
[pid 16773] <... set_robust_list resumed>) = 0
[pid 16773] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16773] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16772] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16773] <... futex resumed>)        = 0
[pid 16773] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16773] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16773] <... futex resumed>)        = 0
[pid 16772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16773] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16772] <... futex resumed>)        = 0
[pid 16773] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16773] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16772] <... futex resumed>)        = 0
[pid 16772] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16772] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16773] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16773] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16772] <... futex resumed>)        = 0
[pid 16773] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16772] exit_group(0)               = ?
[pid 16773] <... futex resumed>)        = ?
[pid 16773] +++ exited with 0 +++
[pid 16772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16774
./strace-static-x86_64: Process 16774 attached
[pid 16774] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16774] setpgid(0, 0)               = 0
[pid 16774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16774] write(3, "1000", 4)         = 4
[pid 16774] close(3)                    = 0
[pid 16774] write(1, "executing program\n", 18executing program
) = 18
[pid 16774] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16774] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16774] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16774] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16774] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16774] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16774] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16775 attached
 => {parent_tid=[16775]}, 88) = 16775
[pid 16775] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16774] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16775] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16774] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16775] <... futex resumed>)        = 0
[pid 16775] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16775] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16774] <... futex resumed>)        = 0
[pid 16774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16775] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16774] <... futex resumed>)        = 0
[pid 16775] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16775] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16774] <... futex resumed>)        = 1
[pid 16775] <... futex resumed>)        = 0
[pid 16775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16774] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16775] <... futex resumed>)        = 0
[pid 16775] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16775] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16775] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16774] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16774] exit_group(0)               = ?
[pid 16775] <... futex resumed>)        = ?
[pid 16775] +++ exited with 0 +++
[pid 16774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16776 attached
, child_tidptr=0x55557060c690) = 16776
[pid 16776] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16776] setpgid(0, 0)               = 0
[pid 16776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16776] write(3, "1000", 4)         = 4
[pid 16776] close(3)                    = 0
[pid 16776] write(1, "executing program\n", 18executing program
) = 18
[pid 16776] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16776] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16776] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16776] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16776] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16776] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16776] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16777]}, 88) = 16777
[pid 16776] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16777 attached
 <unfinished ...>
[pid 16777] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16777] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16777] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16776] <... futex resumed>)        = 0
[pid 16776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16777] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16776] <... futex resumed>)        = 0
[pid 16776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16777] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16776] <... futex resumed>)        = 0
[pid 16776] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16776] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16777] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16777] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16776] <... futex resumed>)        = 0
[pid 16776] exit_group(0)               = ?
[pid 16777] +++ exited with 0 +++
[pid 16776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16778 attached
, child_tidptr=0x55557060c690) = 16778
[pid 16778] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16778] setpgid(0, 0)               = 0
[pid 16778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16778] write(3, "1000", 4)         = 4
[pid 16778] close(3)                    = 0
[pid 16778] write(1, "executing program\n", 18executing program
) = 18
[pid 16778] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16778] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16778] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16778] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16778] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16778] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16778] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16779 attached
 => {parent_tid=[16779]}, 88) = 16779
[pid 16779] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16779] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16778] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16779] <... futex resumed>)        = 0
[pid 16778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16779] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16779] <... futex resumed>)        = 0
[pid 16779] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16779] <... futex resumed>)        = 0
[pid 16779] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16778] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16779] <... futex resumed>)        = 0
[pid 16779] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16778] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16779] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16779] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16779] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16778] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16778] exit_group(0)               = ?
[pid 16779] <... futex resumed>)        = ?
[pid 16779] +++ exited with 0 +++
[pid 16778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16780 attached
, child_tidptr=0x55557060c690) = 16780
[pid 16780] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16780] setpgid(0, 0)               = 0
[pid 16780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16780] write(3, "1000", 4)         = 4
executing program
[pid 16780] close(3)                    = 0
[pid 16780] write(1, "executing program\n", 18) = 18
[pid 16780] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16780] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16780] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16780] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16780] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16780] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16780] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16781 attached
 <unfinished ...>
[pid 16781] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16780] <... clone3 resumed> => {parent_tid=[16781]}, 88) = 16781
[pid 16781] <... set_robust_list resumed>) = 0
[pid 16781] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16780] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16781] <... futex resumed>)        = 0
[pid 16780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16781] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16781] <... futex resumed>)        = 0
[pid 16781] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16781] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16781] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16780] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16781] <... futex resumed>)        = 0
[pid 16780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16781] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16780] <... futex resumed>)        = 0
[pid 16781] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16780] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16781] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16780] <... futex resumed>)        = 0
[pid 16781] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16780] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16781] <... futex resumed>)        = 0
[pid 16780] exit_group(0)               = ?
[pid 16781] +++ exited with 0 +++
[pid 16780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16782
./strace-static-x86_64: Process 16782 attached
[pid 16782] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16782] setpgid(0, 0)               = 0
[pid 16782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16782] write(3, "1000", 4)         = 4
[pid 16782] close(3)                    = 0
[pid 16782] write(1, "executing program\n", 18) = 18
executing program
[pid 16782] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16782] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16782] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16782] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16782] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16782] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16782] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16783]}, 88) = 16783
[pid 16782] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16783 attached
 <unfinished ...>
[pid 16783] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16783] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16783] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16782] <... futex resumed>)        = 0
[pid 16782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16783] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16782] <... futex resumed>)        = 0
[pid 16782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16783] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16782] <... futex resumed>)        = 0
[pid 16782] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16782] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16783] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16783] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16782] <... futex resumed>)        = 0
[pid 16782] exit_group(0)               = ?
[pid 16783] +++ exited with 0 +++
[pid 16782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16784 attached
, child_tidptr=0x55557060c690) = 16784
[pid 16784] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16784] setpgid(0, 0)               = 0
[pid 16784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16784] write(3, "1000", 4)         = 4
[pid 16784] close(3)                    = 0
[pid 16784] write(1, "executing program\n", 18executing program
) = 18
[pid 16784] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16784] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16784] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16784] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16784] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16784] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16784] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16785 attached
 => {parent_tid=[16785]}, 88) = 16785
[pid 16785] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16785] <... futex resumed>)        = 0
[pid 16785] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16785] <... futex resumed>)        = 0
[pid 16785] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16785] <... futex resumed>)        = 0
[pid 16785] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16784] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16785] <... futex resumed>)        = 0
[pid 16785] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16784] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16785] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16785] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16785] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16784] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16784] exit_group(0)               = ?
[pid 16785] <... futex resumed>)        = ?
[pid 16785] +++ exited with 0 +++
[pid 16784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16786
./strace-static-x86_64: Process 16786 attached
[pid 16786] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16786] setpgid(0, 0)               = 0
[pid 16786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16786] write(3, "1000", 4)         = 4
[pid 16786] close(3)                    = 0
[pid 16786] write(1, "executing program\n", 18executing program
) = 18
[pid 16786] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16786] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16786] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16786] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16786] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16786] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16786] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16787]}, 88) = 16787
[pid 16786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16787 attached
 <unfinished ...>
[pid 16787] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16787] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16787] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16786] <... futex resumed>)        = 0
[pid 16786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16787] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16786] <... futex resumed>)        = 0
[pid 16786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16787] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16786] <... futex resumed>)        = 0
[pid 16786] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16786] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16787] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16787] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16786] <... futex resumed>)        = 0
[pid 16786] exit_group(0)               = ?
[pid 16787] +++ exited with 0 +++
[pid 16786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16788 attached
, child_tidptr=0x55557060c690) = 16788
[pid 16788] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16788] setpgid(0, 0)               = 0
[pid 16788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16788] write(3, "1000", 4)         = 4
[pid 16788] close(3)                    = 0
[pid 16788] write(1, "executing program\n", 18executing program
) = 18
[pid 16788] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16788] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16788] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16788] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16789 attached
 => {parent_tid=[16789]}, 88) = 16789
[pid 16789] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16789] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16789] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16789] <... futex resumed>)        = 0
[pid 16789] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16789] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16789] <... futex resumed>)        = 0
[pid 16789] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16789] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16789] <... futex resumed>)        = 0
[pid 16789] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16789] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16788] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16789] <... futex resumed>)        = 0
[pid 16788] <... futex resumed>)        = 1
[pid 16789] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16788] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16789] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16789] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16789] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16788] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16788] exit_group(0)               = ?
[pid 16789] <... futex resumed>)        = ?
[pid 16789] +++ exited with 0 +++
[pid 16788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16790 attached
, child_tidptr=0x55557060c690) = 16790
[pid 16790] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16790] setpgid(0, 0)               = 0
[pid 16790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16790] write(3, "1000", 4)         = 4
[pid 16790] close(3)                    = 0
[pid 16790] write(1, "executing program\n", 18executing program
) = 18
[pid 16790] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16790] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16790] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16790] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16790] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16790] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16790] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16791 attached
 => {parent_tid=[16791]}, 88) = 16791
[pid 16791] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16791] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16791] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16790] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16791] <... futex resumed>)        = 0
[pid 16791] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16791] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16791] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16790] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16791] <... futex resumed>)        = 0
[pid 16791] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16791] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16791] <... futex resumed>)        = 0
[pid 16791] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16791] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16790] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16791] <... futex resumed>)        = 0
[pid 16790] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16791] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16791] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16790] <... futex resumed>)        = 0
[pid 16791] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16790] exit_group(0)               = ?
[pid 16791] <... futex resumed>)        = ?
[pid 16791] +++ exited with 0 +++
[pid 16790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16792 attached
, child_tidptr=0x55557060c690) = 16792
[pid 16792] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16792] setpgid(0, 0)               = 0
[pid 16792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16792] write(3, "1000", 4)         = 4
executing program
[pid 16792] close(3)                    = 0
[pid 16792] write(1, "executing program\n", 18) = 18
[pid 16792] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16792] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16792] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16792] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16792] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16792] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16792] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16793 attached
 <unfinished ...>
[pid 16793] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16792] <... clone3 resumed> => {parent_tid=[16793]}, 88) = 16793
[pid 16793] <... set_robust_list resumed>) = 0
[pid 16793] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16793] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16792] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16793] <... futex resumed>)        = 0
[pid 16793] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16793] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16793] <... futex resumed>)        = 0
[pid 16792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16793] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16792] <... futex resumed>)        = 0
[pid 16793] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16793] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16792] <... futex resumed>)        = 0
[pid 16792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16793] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16792] <... futex resumed>)        = 0
[pid 16792] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16792] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16793] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16793] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16792] <... futex resumed>)        = 0
[pid 16793] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16792] exit_group(0)               = ?
[pid 16793] <... futex resumed>)        = ?
[pid 16793] +++ exited with 0 +++
[pid 16792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16794
./strace-static-x86_64: Process 16794 attached
[pid 16794] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16794] setpgid(0, 0)               = 0
[pid 16794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16794] write(3, "1000", 4)         = 4
[pid 16794] close(3)                    = 0
[pid 16794] write(1, "executing program\n", 18executing program
) = 18
[pid 16794] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16794] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16794] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16794] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16794] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16794] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16794] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16795 attached
 => {parent_tid=[16795]}, 88) = 16795
[pid 16795] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16795] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16795] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16794] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16795] <... futex resumed>)        = 0
[pid 16795] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16795] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16795] <... futex resumed>)        = 0
[pid 16795] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16795] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16795] <... futex resumed>)        = 0
[pid 16795] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16795] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16794] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16795] <... futex resumed>)        = 0
[pid 16795] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16795] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16795] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16794] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16794] exit_group(0)               = ?
[pid 16795] <... futex resumed>)        = ?
[pid 16795] +++ exited with 0 +++
[pid 16794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16796
./strace-static-x86_64: Process 16796 attached
[pid 16796] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16796] setpgid(0, 0)               = 0
[pid 16796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16796] write(3, "1000", 4)         = 4
[pid 16796] close(3)                    = 0
executing program
[pid 16796] write(1, "executing program\n", 18) = 18
[pid 16796] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16796] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16796] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16796] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16796] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16796] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16796] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16797]}, 88) = 16797
[pid 16796] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 16797 attached
[pid 16796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16797] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16796] <... futex resumed>)        = 0
[pid 16797] <... set_robust_list resumed>) = 0
[pid 16796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16797] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16797] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16796] <... futex resumed>)        = 0
[pid 16797] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16797] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16796] <... futex resumed>)        = 0
[pid 16796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16797] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16797] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16796] <... futex resumed>)        = 0
[pid 16796] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16796] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16797] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16797] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16797] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16796] <... futex resumed>)        = 0
[pid 16796] exit_group(0)               = ?
[pid 16797] +++ exited with 0 +++
[pid 16796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16798 attached
, child_tidptr=0x55557060c690) = 16798
[pid 16798] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16798] setpgid(0, 0)               = 0
[pid 16798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16798] write(3, "1000", 4)         = 4
[pid 16798] close(3)                    = 0
[pid 16798] write(1, "executing program\n", 18executing program
) = 18
[pid 16798] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16798] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16798] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16798] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16798] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16798] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16798] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16799 attached
 => {parent_tid=[16799]}, 88) = 16799
[pid 16799] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16799] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16798] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16799] <... futex resumed>)        = 0
[pid 16798] <... futex resumed>)        = 1
[pid 16799] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16799] <... futex resumed>)        = 0
[pid 16799] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16799] <... futex resumed>)        = 0
[pid 16798] <... futex resumed>)        = 1
[pid 16799] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16799] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16798] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16798] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16799] <... futex resumed>)        = 0
[pid 16798] <... futex resumed>)        = 1
[pid 16798] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16799] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16799] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16799] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16798] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16798] exit_group(0)               = ?
[pid 16799] <... futex resumed>)        = ?
[pid 16799] +++ exited with 0 +++
[pid 16798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16800 attached
, child_tidptr=0x55557060c690) = 16800
[pid 16800] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16800] setpgid(0, 0)               = 0
[pid 16800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16800] write(3, "1000", 4)         = 4
[pid 16800] close(3)                    = 0
executing program
[pid 16800] write(1, "executing program\n", 18) = 18
[pid 16800] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16800] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16800] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16800] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16800] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16800] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16800] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16801]}, 88) = 16801
./strace-static-x86_64: Process 16801 attached
[pid 16800] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16801] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16800] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16801] <... set_robust_list resumed>) = 0
[pid 16801] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16801] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16800] <... futex resumed>)        = 0
[pid 16801] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16801] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16800] <... futex resumed>)        = 0
[pid 16800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16801] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16800] <... futex resumed>)        = 0
[pid 16800] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16800] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16801] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16801] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16800] <... futex resumed>)        = 0
[pid 16800] exit_group(0)               = ?
[pid 16801] +++ exited with 0 +++
[pid 16800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16802
./strace-static-x86_64: Process 16802 attached
[pid 16802] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16802] setpgid(0, 0)               = 0
[pid 16802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16802] write(3, "1000", 4)         = 4
[pid 16802] close(3)                    = 0
[pid 16802] write(1, "executing program\n", 18executing program
) = 18
[pid 16802] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16802] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16802] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16802] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16802] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16802] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16802] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16803 attached
 => {parent_tid=[16803]}, 88) = 16803
[pid 16803] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16803] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16802] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16803] <... futex resumed>)        = 0
[pid 16803] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16803] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16802] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16803] <... futex resumed>)        = 0
[pid 16803] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16803] <... futex resumed>)        = 0
[pid 16803] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16802] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16803] <... futex resumed>)        = 0
[pid 16803] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16802] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16803] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16803] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16803] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16802] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16802] exit_group(0)               = ?
[pid 16803] <... futex resumed>)        = ?
[pid 16803] +++ exited with 0 +++
[pid 16802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16804 attached
, child_tidptr=0x55557060c690) = 16804
[pid 16804] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16804] setpgid(0, 0)               = 0
[pid 16804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16804] write(3, "1000", 4)         = 4
[pid 16804] close(3)                    = 0
[pid 16804] write(1, "executing program\n", 18executing program
) = 18
[pid 16804] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16804] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16804] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16804] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16804] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16804] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16804] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16805]}, 88) = 16805
[pid 16804] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16805 attached
 <unfinished ...>
[pid 16805] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16805] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16804] <... futex resumed>)        = 0
[pid 16804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16805] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16804] <... futex resumed>)        = 0
[pid 16804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16805] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16804] <... futex resumed>)        = 0
[pid 16804] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16804] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16805] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16805] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16804] <... futex resumed>)        = 0
[pid 16804] exit_group(0)               = ?
[pid 16805] +++ exited with 0 +++
[pid 16804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16806 attached
, child_tidptr=0x55557060c690) = 16806
[pid 16806] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16806] setpgid(0, 0)               = 0
[pid 16806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16806] write(3, "1000", 4)         = 4
[pid 16806] close(3)                    = 0
[pid 16806] write(1, "executing program\n", 18executing program
) = 18
[pid 16806] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16806] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16806] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16806] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16806] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16806] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16806] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16807 attached
 => {parent_tid=[16807]}, 88) = 16807
[pid 16807] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16807] <... futex resumed>)        = 0
[pid 16807] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16807] <... futex resumed>)        = 0
[pid 16807] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16807] <... futex resumed>)        = 0
[pid 16807] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16806] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16807] <... futex resumed>)        = 0
[pid 16806] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16807] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16807] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16807] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16806] exit_group(0)               = ?
[pid 16807] <... futex resumed>)        = ?
[pid 16807] +++ exited with 0 +++
[pid 16806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16808 attached
, child_tidptr=0x55557060c690) = 16808
[pid 16808] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16808] setpgid(0, 0)               = 0
[pid 16808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16808] write(3, "1000", 4)         = 4
executing program
[pid 16808] close(3)                    = 0
[pid 16808] write(1, "executing program\n", 18) = 18
[pid 16808] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16808] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16808] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16808] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16809 attached
 <unfinished ...>
[pid 16809] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16808] <... clone3 resumed> => {parent_tid=[16809]}, 88) = 16809
[pid 16809] <... set_robust_list resumed>) = 0
[pid 16808] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16809] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16808] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16809] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16809] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16808] <... futex resumed>)        = 0
[pid 16809] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16808] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16809] <... futex resumed>)        = 0
[pid 16808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16809] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16808] <... futex resumed>)        = 0
[pid 16809] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16808] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16809] <... futex resumed>)        = 0
[pid 16808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16809] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16808] <... futex resumed>)        = 0
[pid 16809] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16808] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16809] <... futex resumed>)        = 0
[pid 16808] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16809] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16808] <... futex resumed>)        = 0
[pid 16808] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16809] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16809] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16808] <... futex resumed>)        = 0
[pid 16808] exit_group(0)               = ?
[pid 16809] +++ exited with 0 +++
[pid 16808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16810
./strace-static-x86_64: Process 16810 attached
[pid 16810] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16810] setpgid(0, 0)               = 0
[pid 16810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16810] write(3, "1000", 4)         = 4
executing program
[pid 16810] close(3)                    = 0
[pid 16810] write(1, "executing program\n", 18) = 18
[pid 16810] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16810] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16810] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16810] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16810] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16810] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16810] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16811]}, 88) = 16811
[pid 16810] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16811 attached
 <unfinished ...>
[pid 16811] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16811] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16811] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16810] <... futex resumed>)        = 0
[pid 16810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16811] <... futex resumed>)        = 1
[pid 16811] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16810] <... futex resumed>)        = 0
[pid 16810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16811] <... futex resumed>)        = 1
[pid 16811] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16810] <... futex resumed>)        = 0
[pid 16810] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16810] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16811] <... futex resumed>)        = 1
[pid 16811] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16811] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16810] <... futex resumed>)        = 0
[pid 16811] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16810] exit_group(0)               = ?
[pid 16811] <... futex resumed>)        = ?
[pid 16811] +++ exited with 0 +++
[pid 16810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16812 attached
, child_tidptr=0x55557060c690) = 16812
[pid 16812] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16812] setpgid(0, 0)               = 0
[pid 16812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16812] write(3, "1000", 4)         = 4
[pid 16812] close(3executing program
)                    = 0
[pid 16812] write(1, "executing program\n", 18) = 18
[pid 16812] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16812] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16812] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16812] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16812] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16812] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16812] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16813]}, 88) = 16813
[pid 16812] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16813 attached
 <unfinished ...>
[pid 16813] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16813] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16813] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16812] <... futex resumed>)        = 0
[pid 16812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16813] <... futex resumed>)        = 1
[pid 16813] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16812] <... futex resumed>)        = 0
[pid 16812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16813] <... futex resumed>)        = 1
[pid 16813] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16812] <... futex resumed>)        = 0
[pid 16812] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16812] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16813] <... futex resumed>)        = 1
[pid 16813] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16813] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16812] <... futex resumed>)        = 0
[pid 16812] exit_group(0)               = ?
[pid 16813] <... futex resumed>)        = ?
[pid 16813] +++ exited with 0 +++
[pid 16812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16814 attached
, child_tidptr=0x55557060c690) = 16814
[pid 16814] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16814] setpgid(0, 0)               = 0
[pid 16814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16814] write(3, "1000", 4)         = 4
executing program
[pid 16814] close(3)                    = 0
[pid 16814] write(1, "executing program\n", 18) = 18
[pid 16814] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16814] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16814] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16814] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16814] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16814] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16814] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16815 attached
 => {parent_tid=[16815]}, 88) = 16815
[pid 16815] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16815] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16814] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16815] <... futex resumed>)        = 0
[pid 16814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16815] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16814] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16815] <... futex resumed>)        = 0
[pid 16814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16815] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16814] <... futex resumed>)        = 0
[pid 16815] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16815] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16815] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16814] <... futex resumed>)        = 0
[pid 16815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16814] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16815] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16814] <... futex resumed>)        = 0
[pid 16814] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16815] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16815] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16814] <... futex resumed>)        = 0
[pid 16815] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16814] exit_group(0)               = ?
[pid 16815] <... futex resumed>)        = ?
[pid 16815] +++ exited with 0 +++
[pid 16814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16816 attached
, child_tidptr=0x55557060c690) = 16816
[pid 16816] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16816] setpgid(0, 0)               = 0
[pid 16816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16816] write(3, "1000", 4)         = 4
[pid 16816] close(3)                    = 0
[pid 16816] write(1, "executing program\n", 18executing program
) = 18
[pid 16816] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16816] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16816] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16816] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16816] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16816] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16816] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16817 attached
 => {parent_tid=[16817]}, 88) = 16817
[pid 16817] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16817] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16816] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16817] <... futex resumed>)        = 0
[pid 16817] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16817] <... futex resumed>)        = 0
[pid 16817] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16817] <... futex resumed>)        = 0
[pid 16817] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16817] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16816] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16817] <... futex resumed>)        = 0
[pid 16816] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16817] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16817] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16816] <... futex resumed>)        = 0
[pid 16816] exit_group(0)               = ?
[pid 16817] +++ exited with 0 +++
[pid 16816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16818 attached
, child_tidptr=0x55557060c690) = 16818
[pid 16818] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16818] setpgid(0, 0)               = 0
[pid 16818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16818] write(3, "1000", 4)         = 4
[pid 16818] close(3executing program
)                    = 0
[pid 16818] write(1, "executing program\n", 18) = 18
[pid 16818] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16818] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16818] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16818] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16818] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16818] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16818] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16819 attached
 => {parent_tid=[16819]}, 88) = 16819
[pid 16819] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16818] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16819] <... set_robust_list resumed>) = 0
[pid 16818] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16819] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16819] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16818] <... futex resumed>)        = 0
[pid 16819] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16819] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16818] <... futex resumed>)        = 0
[pid 16818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16819] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16818] <... futex resumed>)        = 0
[pid 16818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16819] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16818] <... futex resumed>)        = 0
[pid 16818] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16818] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16819] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16819] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16818] <... futex resumed>)        = 0
[pid 16818] exit_group(0)               = ?
[pid 16819] +++ exited with 0 +++
[pid 16818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16820
./strace-static-x86_64: Process 16820 attached
[pid 16820] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16820] setpgid(0, 0)               = 0
[pid 16820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16820] write(3, "1000", 4)         = 4
[pid 16820] close(3)                    = 0
[pid 16820] write(1, "executing program\n", 18executing program
) = 18
[pid 16820] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16820] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16820] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16820] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16820] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16820] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16820] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16821 attached
 => {parent_tid=[16821]}, 88) = 16821
[pid 16821] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16821] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16820] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16821] <... futex resumed>)        = 0
[pid 16821] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16821] <... futex resumed>)        = 0
[pid 16821] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16821] <... futex resumed>)        = 0
[pid 16821] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16821] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16820] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16820] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16821] <... futex resumed>)        = 0
[pid 16820] <... futex resumed>)        = 1
[pid 16821] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16820] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16821] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16821] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16821] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16820] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16820] exit_group(0)               = ?
[pid 16821] <... futex resumed>)        = ?
[pid 16821] +++ exited with 0 +++
[pid 16820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16822 attached
, child_tidptr=0x55557060c690) = 16822
[pid 16822] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16822] setpgid(0, 0)               = 0
[pid 16822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16822] write(3, "1000", 4)         = 4
executing program
[pid 16822] close(3)                    = 0
[pid 16822] write(1, "executing program\n", 18) = 18
[pid 16822] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16822] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16822] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16822] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16822] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16822] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16822] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16823 attached
 <unfinished ...>
[pid 16823] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16823] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16822] <... clone3 resumed> => {parent_tid=[16823]}, 88) = 16823
[pid 16822] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16823] <... futex resumed>)        = 0
[pid 16822] <... futex resumed>)        = 1
[pid 16823] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16823] <... futex resumed>)        = 0
[pid 16822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16823] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16822] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16823] <... futex resumed>)        = 0
[pid 16822] <... futex resumed>)        = 1
[pid 16823] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16822] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16823] <... futex resumed>)        = 0
[pid 16822] <... futex resumed>)        = 1
[pid 16822] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16823] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16823] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16822] <... futex resumed>)        = 0
[pid 16823] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16822] exit_group(0)               = ?
[pid 16823] <... futex resumed>)        = ?
[pid 16823] +++ exited with 0 +++
[pid 16822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16824 attached
, child_tidptr=0x55557060c690) = 16824
[pid 16824] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16824] setpgid(0, 0)               = 0
[pid 16824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16824] write(3, "1000", 4)         = 4
[pid 16824] close(3)                    = 0
[pid 16824] write(1, "executing program\n", 18executing program
) = 18
[pid 16824] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16824] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16824] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16824] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16824] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16824] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16824] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16825]}, 88) = 16825
[pid 16824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16825 attached
 <unfinished ...>
[pid 16825] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16825] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16824] <... futex resumed>)        = 0
[pid 16824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16825] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16824] <... futex resumed>)        = 0
[pid 16824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16825] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16824] <... futex resumed>)        = 0
[pid 16824] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16824] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16825] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16825] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16824] <... futex resumed>)        = 0
[pid 16824] exit_group(0)               = ?
[pid 16825] +++ exited with 0 +++
[pid 16824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16826 attached
, child_tidptr=0x55557060c690) = 16826
[pid 16826] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16826] setpgid(0, 0)               = 0
[pid 16826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16826] write(3, "1000", 4)         = 4
[pid 16826] close(3)                    = 0
[pid 16826] write(1, "executing program\n", 18executing program
) = 18
[pid 16826] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16826] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16826] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16826] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16826] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16826] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16826] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16827 attached
 => {parent_tid=[16827]}, 88) = 16827
[pid 16827] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16826] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16827] <... set_robust_list resumed>) = 0
[pid 16827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16826] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16827] <... futex resumed>)        = 0
[pid 16827] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16827] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16826] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16827] <... futex resumed>)        = 0
[pid 16827] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16827] <... futex resumed>)        = 0
[pid 16827] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16826] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16827] <... futex resumed>)        = 0
[pid 16826] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16827] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16827] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16827] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16826] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16826] exit_group(0)               = ?
[pid 16827] <... futex resumed>)        = ?
[pid 16827] +++ exited with 0 +++
[pid 16826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16828 attached
, child_tidptr=0x55557060c690) = 16828
[pid 16828] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16828] setpgid(0, 0)               = 0
[pid 16828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16828] write(3, "1000", 4)         = 4
[pid 16828] close(3executing program
)                    = 0
[pid 16828] write(1, "executing program\n", 18) = 18
[pid 16828] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16828] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16828] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16828] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16828] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16828] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16828] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16829 attached
 => {parent_tid=[16829]}, 88) = 16829
[pid 16828] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16829] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16829] <... set_robust_list resumed>) = 0
[pid 16828] <... futex resumed>)        = 0
[pid 16829] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16829] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16829] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16828] <... futex resumed>)        = 0
[pid 16828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16829] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16828] <... futex resumed>)        = 0
[pid 16828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16829] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16828] <... futex resumed>)        = 0
[pid 16828] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16828] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16829] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16829] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16828] <... futex resumed>)        = 0
[pid 16828] exit_group(0)               = ?
[pid 16829] +++ exited with 0 +++
[pid 16828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16830 attached
, child_tidptr=0x55557060c690) = 16830
[pid 16830] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16830] setpgid(0, 0)               = 0
[pid 16830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16830] write(3, "1000", 4)         = 4
[pid 16830] close(3)                    = 0
[pid 16830] write(1, "executing program\n", 18executing program
) = 18
[pid 16830] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16830] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16830] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16830] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16830] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16830] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16830] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16831 attached
 => {parent_tid=[16831]}, 88) = 16831
[pid 16831] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16831] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16830] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16831] <... futex resumed>)        = 0
[pid 16831] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16831] <... futex resumed>)        = 0
[pid 16831] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16831] <... futex resumed>)        = 0
[pid 16831] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16830] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16831] <... futex resumed>)        = 0
[pid 16831] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16831] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16831] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16830] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16830] exit_group(0)               = ?
[pid 16831] <... futex resumed>)        = ?
[pid 16831] +++ exited with 0 +++
[pid 16830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16832 attached
, child_tidptr=0x55557060c690) = 16832
[pid 16832] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16832] setpgid(0, 0)               = 0
[pid 16832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16832] write(3, "1000", 4)         = 4
[pid 16832] close(3)                    = 0
executing program
[pid 16832] write(1, "executing program\n", 18) = 18
[pid 16832] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16832] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16832] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16832] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16832] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16832] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16832] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16833 attached
 <unfinished ...>
[pid 16833] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16832] <... clone3 resumed> => {parent_tid=[16833]}, 88) = 16833
[pid 16833] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16832] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16833] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16832] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16833] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16833] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16832] <... futex resumed>)        = 0
[pid 16833] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16833] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16832] <... futex resumed>)        = 0
[pid 16832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16833] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16832] <... futex resumed>)        = 0
[pid 16832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16833] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16832] <... futex resumed>)        = 0
[pid 16832] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16832] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16833] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16833] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16832] <... futex resumed>)        = 0
[pid 16832] exit_group(0)               = ?
[pid 16833] +++ exited with 0 +++
[pid 16832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16834 attached
, child_tidptr=0x55557060c690) = 16834
[pid 16834] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16834] setpgid(0, 0)               = 0
[pid 16834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16834] write(3, "1000", 4)         = 4
[pid 16834] close(3)                    = 0
[pid 16834] write(1, "executing program\n", 18executing program
) = 18
[pid 16834] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16834] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16834] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16834] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16834] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16834] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16834] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16835 attached
 => {parent_tid=[16835]}, 88) = 16835
[pid 16835] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16835] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16834] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16835] <... futex resumed>)        = 0
[pid 16834] <... futex resumed>)        = 1
[pid 16835] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16835] <... futex resumed>)        = 0
[pid 16835] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16835] <... futex resumed>)        = 0
[pid 16835] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16834] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16835] <... futex resumed>)        = 0
[pid 16835] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16834] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16835] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16835] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16835] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16834] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16834] exit_group(0)               = ?
[pid 16835] <... futex resumed>)        = ?
[pid 16835] +++ exited with 0 +++
[pid 16834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16836 attached
, child_tidptr=0x55557060c690) = 16836
[pid 16836] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16836] setpgid(0, 0)               = 0
[pid 16836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16836] write(3, "1000", 4)         = 4
[pid 16836] close(3)                    = 0
executing program
[pid 16836] write(1, "executing program\n", 18) = 18
[pid 16836] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16836] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16836] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16836] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16836] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16836] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16836] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16837]}, 88) = 16837
./strace-static-x86_64: Process 16837 attached
[pid 16836] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16837] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16836] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16837] <... set_robust_list resumed>) = 0
[pid 16836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16837] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16836] <... futex resumed>)        = 0
[pid 16837] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16837] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16836] <... futex resumed>)        = 0
[pid 16836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16837] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16836] <... futex resumed>)        = 0
[pid 16836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16837] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16836] <... futex resumed>)        = 0
[pid 16836] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16836] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16837] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16837] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16836] <... futex resumed>)        = 0
[pid 16836] exit_group(0 <unfinished ...>
[pid 16837] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16836] <... exit_group resumed>)   = ?
[pid 16837] <... futex resumed>)        = ?
[pid 16837] +++ exited with 0 +++
[pid 16836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16836, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16838 attached
, child_tidptr=0x55557060c690) = 16838
[pid 16838] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16838] setpgid(0, 0)               = 0
[pid 16838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16838] write(3, "1000", 4)         = 4
[pid 16838] close(3)                    = 0
[pid 16838] write(1, "executing program\n", 18executing program
) = 18
[pid 16838] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16838] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16838] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16838] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16838] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16838] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16838] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16839 attached
 => {parent_tid=[16839]}, 88) = 16839
[pid 16839] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16839] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16838] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16839] <... futex resumed>)        = 0
[pid 16839] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16839] <... futex resumed>)        = 0
[pid 16839] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16839] <... futex resumed>)        = 0
[pid 16838] <... futex resumed>)        = 1
[pid 16839] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16839] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16838] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16839] <... futex resumed>)        = 0
[pid 16838] <... futex resumed>)        = 1
[pid 16838] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16839] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16839] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16839] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16838] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16838] exit_group(0)               = ?
[pid 16839] <... futex resumed>)        = ?
[pid 16839] +++ exited with 0 +++
[pid 16838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16840 attached
, child_tidptr=0x55557060c690) = 16840
[pid 16840] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16840] setpgid(0, 0)               = 0
[pid 16840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16840] write(3, "1000", 4)         = 4
[pid 16840] close(3)                    = 0
executing program
[pid 16840] write(1, "executing program\n", 18) = 18
[pid 16840] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16840] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16840] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16840] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16840] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16840] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16840] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16841 attached
 => {parent_tid=[16841]}, 88) = 16841
[pid 16840] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16841] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16841] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16841] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16840] <... futex resumed>)        = 0
[pid 16840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16841] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16840] <... futex resumed>)        = 0
[pid 16840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16841] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16840] <... futex resumed>)        = 0
[pid 16840] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16840] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16841] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16841] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16840] <... futex resumed>)        = 0
[pid 16840] exit_group(0)               = ?
[pid 16841] +++ exited with 0 +++
[pid 16840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16842 attached
, child_tidptr=0x55557060c690) = 16842
[pid 16842] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16842] setpgid(0, 0)               = 0
[pid 16842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16842] write(3, "1000", 4)         = 4
[pid 16842] close(3)                    = 0
[pid 16842] write(1, "executing program\n", 18executing program
) = 18
[pid 16842] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16842] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16842] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16842] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16842] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16842] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16842] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16843 attached
 => {parent_tid=[16843]}, 88) = 16843
[pid 16843] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16842] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16843] <... set_robust_list resumed>) = 0
[pid 16843] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16843] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16842] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16843] <... futex resumed>)        = 0
[pid 16843] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16843] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16843] <... futex resumed>)        = 0
[pid 16843] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16843] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16843] <... futex resumed>)        = 0
[pid 16843] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16843] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16842] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16843] <... futex resumed>)        = 0
[pid 16843] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16843] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16843] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16842] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16842] exit_group(0)               = ?
[pid 16843] <... futex resumed>)        = ?
[pid 16843] +++ exited with 0 +++
[pid 16842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16844
./strace-static-x86_64: Process 16844 attached
[pid 16844] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16844] setpgid(0, 0)               = 0
[pid 16844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16844] write(3, "1000", 4)         = 4
[pid 16844] close(3executing program
)                    = 0
[pid 16844] write(1, "executing program\n", 18) = 18
[pid 16844] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16844] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16844] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16844] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16844] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16844] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16844] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16845 attached
 => {parent_tid=[16845]}, 88) = 16845
[pid 16845] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16845] <... futex resumed>)        = 0
[pid 16844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16845] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16844] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16845] <... futex resumed>)        = 0
[pid 16845] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16845] <... futex resumed>)        = 0
[pid 16844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16845] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16844] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16844] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16845] <... futex resumed>)        = 0
[pid 16844] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16845] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16845] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16844] <... futex resumed>)        = 0
[pid 16845] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16844] exit_group(0)               = ?
[pid 16845] <... futex resumed>)        = ?
[pid 16845] +++ exited with 0 +++
[pid 16844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16846 attached
, child_tidptr=0x55557060c690) = 16846
[pid 16846] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16846] setpgid(0, 0)               = 0
[pid 16846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16846] write(3, "1000", 4)         = 4
[pid 16846] close(3executing program
)                    = 0
[pid 16846] write(1, "executing program\n", 18) = 18
[pid 16846] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16846] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16846] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16846] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16846] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16846] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16846] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16847 attached
 <unfinished ...>
[pid 16847] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16847] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16846] <... clone3 resumed> => {parent_tid=[16847]}, 88) = 16847
[pid 16846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16847] <... futex resumed>)        = 0
[pid 16847] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16847] <... futex resumed>)        = 0
[pid 16846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16847] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16846] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16847] <... futex resumed>)        = 0
[pid 16846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16847] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16846] <... futex resumed>)        = 0
[pid 16846] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16846] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16847] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16847] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16847] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16846] <... futex resumed>)        = 0
[pid 16846] exit_group(0)               = ?
[pid 16847] <... futex resumed>)        = ?
[pid 16847] +++ exited with 0 +++
[pid 16846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16848
./strace-static-x86_64: Process 16848 attached
[pid 16848] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16848] setpgid(0, 0)               = 0
[pid 16848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16848] write(3, "1000", 4)         = 4
[pid 16848] close(3)                    = 0
[pid 16848] write(1, "executing program\n", 18executing program
) = 18
[pid 16848] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16848] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16848] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16848] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16848] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16848] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16848] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16849]}, 88) = 16849
./strace-static-x86_64: Process 16849 attached
[pid 16848] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16849] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16849] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16849] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16848] <... futex resumed>)        = 0
[pid 16848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16849] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16849] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16848] <... futex resumed>)        = 0
[pid 16848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16849] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16849] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16848] <... futex resumed>)        = 0
[pid 16848] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16848] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16849] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16849] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16848] <... futex resumed>)        = 0
[pid 16848] exit_group(0)               = ?
[pid 16849] +++ exited with 0 +++
[pid 16848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16850
./strace-static-x86_64: Process 16850 attached
[pid 16850] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16850] setpgid(0, 0)               = 0
[pid 16850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16850] write(3, "1000", 4)         = 4
[pid 16850] close(3)                    = 0
[pid 16850] write(1, "executing program\n", 18executing program
) = 18
[pid 16850] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16850] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16850] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16850] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16850] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16850] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16850] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16851 attached
 => {parent_tid=[16851]}, 88) = 16851
[pid 16851] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16850] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16851] <... futex resumed>)        = 0
[pid 16851] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16851] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16850] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16851] <... futex resumed>)        = 0
[pid 16851] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16851] <... futex resumed>)        = 0
[pid 16851] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16850] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16851] <... futex resumed>)        = 0
[pid 16851] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16851] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16851] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16850] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16850] exit_group(0)               = ?
[pid 16851] <... futex resumed>)        = ?
[pid 16851] +++ exited with 0 +++
[pid 16850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16852
./strace-static-x86_64: Process 16852 attached
[pid 16852] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16852] setpgid(0, 0)               = 0
[pid 16852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16852] write(3, "1000", 4)         = 4
[pid 16852] close(3executing program
)                    = 0
[pid 16852] write(1, "executing program\n", 18) = 18
[pid 16852] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16852] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16852] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16852] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16853 attached
 <unfinished ...>
[pid 16853] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16853] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16852] <... clone3 resumed> => {parent_tid=[16853]}, 88) = 16853
[pid 16852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16853] <... futex resumed>)        = 0
[pid 16853] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16853] <... futex resumed>)        = 0
[pid 16852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16853] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16852] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16853] <... futex resumed>)        = 0
[pid 16853] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16852] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16853] <... futex resumed>)        = 0
[pid 16852] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16853] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16853] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16852] <... futex resumed>)        = 0
[pid 16853] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16852] exit_group(0)               = ?
[pid 16853] <... futex resumed>)        = ?
[pid 16853] +++ exited with 0 +++
[pid 16852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16854 attached
, child_tidptr=0x55557060c690) = 16854
[pid 16854] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16854] setpgid(0, 0)               = 0
[pid 16854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16854] write(3, "1000", 4)         = 4
executing program
[pid 16854] close(3)                    = 0
[pid 16854] write(1, "executing program\n", 18) = 18
[pid 16854] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16854] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16854] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16854] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16854] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16854] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16854] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16855 attached
 <unfinished ...>
[pid 16855] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16855] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16855] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16854] <... clone3 resumed> => {parent_tid=[16855]}, 88) = 16855
[pid 16854] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16855] <... futex resumed>)        = 0
[pid 16855] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16855] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16855] <... futex resumed>)        = 0
[pid 16854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16855] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16855] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16854] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16855] <... futex resumed>)        = 0
[pid 16854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16855] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16854] <... futex resumed>)        = 0
[pid 16854] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16854] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16855] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16855] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16854] <... futex resumed>)        = 0
[pid 16855] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16854] exit_group(0)               = ?
[pid 16855] <... futex resumed>)        = ?
[pid 16855] +++ exited with 0 +++
[pid 16854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16856 attached
, child_tidptr=0x55557060c690) = 16856
[pid 16856] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16856] setpgid(0, 0)               = 0
[pid 16856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16856] write(3, "1000", 4)         = 4
[pid 16856] close(3)                    = 0
[pid 16856] write(1, "executing program\n", 18executing program
) = 18
[pid 16856] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16856] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16856] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16856] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16856] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16856] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16856] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16857]}, 88) = 16857
[pid 16856] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16857 attached
 <unfinished ...>
[pid 16857] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16857] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16857] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16856] <... futex resumed>)        = 0
[pid 16856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16857] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16856] <... futex resumed>)        = 0
[pid 16856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16857] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16856] <... futex resumed>)        = 0
[pid 16856] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16856] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16857] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16857] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16856] <... futex resumed>)        = 0
[pid 16856] exit_group(0)               = ?
[pid 16857] +++ exited with 0 +++
[pid 16856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16858 attached
, child_tidptr=0x55557060c690) = 16858
[pid 16858] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16858] setpgid(0, 0)               = 0
[pid 16858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16858] write(3, "1000", 4)         = 4
[pid 16858] close(3)                    = 0
[pid 16858] write(1, "executing program\n", 18executing program
) = 18
[pid 16858] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16858] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16858] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16858] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16858] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16858] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16858] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16859 attached
 => {parent_tid=[16859]}, 88) = 16859
[pid 16859] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16859] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16858] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16859] <... futex resumed>)        = 0
[pid 16858] <... futex resumed>)        = 1
[pid 16859] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16859] <... futex resumed>)        = 0
[pid 16859] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16859] <... futex resumed>)        = 0
[pid 16859] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16858] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16859] <... futex resumed>)        = 0
[pid 16859] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16858] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16859] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16859] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16859] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16858] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16858] exit_group(0)               = ?
[pid 16859] <... futex resumed>)        = ?
[pid 16859] +++ exited with 0 +++
[pid 16858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16860 attached
, child_tidptr=0x55557060c690) = 16860
[pid 16860] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16860] setpgid(0, 0)               = 0
[pid 16860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16860] write(3, "1000", 4)         = 4
[pid 16860] close(3)                    = 0
executing program
[pid 16860] write(1, "executing program\n", 18) = 18
[pid 16860] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16860] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16860] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16860] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16861 attached
 <unfinished ...>
[pid 16861] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16861] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16860] <... clone3 resumed> => {parent_tid=[16861]}, 88) = 16861
[pid 16860] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16861] <... futex resumed>)        = 0
[pid 16860] <... futex resumed>)        = 1
[pid 16860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16861] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16860] <... futex resumed>)        = 0
[pid 16860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16861] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16860] <... futex resumed>)        = 0
[pid 16860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16861] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16860] <... futex resumed>)        = 0
[pid 16860] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16860] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16861] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16861] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16860] <... futex resumed>)        = 0
[pid 16860] exit_group(0)               = ?
[pid 16861] +++ exited with 0 +++
[pid 16860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16862 attached
, child_tidptr=0x55557060c690) = 16862
[pid 16862] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16862] setpgid(0, 0)               = 0
[pid 16862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16862] write(3, "1000", 4)         = 4
[pid 16862] close(3)                    = 0
[pid 16862] write(1, "executing program\n", 18executing program
) = 18
[pid 16862] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16862] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16862] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16862] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16862] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16862] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16862] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16863]}, 88) = 16863
[pid 16862] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16863 attached
 <unfinished ...>
[pid 16863] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16863] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16863] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16862] <... futex resumed>)        = 0
[pid 16862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16863] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16862] <... futex resumed>)        = 0
[pid 16862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16863] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16862] <... futex resumed>)        = 0
[pid 16862] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16862] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16863] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16863] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16862] <... futex resumed>)        = 0
[pid 16862] exit_group(0)               = ?
[pid 16863] +++ exited with 0 +++
[pid 16862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16864
./strace-static-x86_64: Process 16864 attached
[pid 16864] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16864] setpgid(0, 0)               = 0
[pid 16864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16864] write(3, "1000", 4)         = 4
[pid 16864] close(3)                    = 0
[pid 16864] write(1, "executing program\n", 18executing program
) = 18
[pid 16864] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16864] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16864] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16864] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16864] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16864] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16864] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16865 attached
 => {parent_tid=[16865]}, 88) = 16865
[pid 16865] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16865] <... futex resumed>)        = 0
[pid 16865] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16865] <... futex resumed>)        = 0
[pid 16865] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16865] <... futex resumed>)        = 0
[pid 16865] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16864] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16865] <... futex resumed>)        = 0
[pid 16865] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16864] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16865] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16865] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16865] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16864] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16864] exit_group(0)               = ?
[pid 16865] <... futex resumed>)        = ?
[pid 16865] +++ exited with 0 +++
[pid 16864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16866 attached
, child_tidptr=0x55557060c690) = 16866
[pid 16866] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16866] setpgid(0, 0)               = 0
[pid 16866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16866] write(3, "1000", 4)         = 4
[pid 16866] close(3)                    = 0
[pid 16866] write(1, "executing program\n", 18executing program
) = 18
[pid 16866] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16866] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16866] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16866] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16866] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16866] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16866] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16867]}, 88) = 16867
[pid 16866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16867 attached
 <unfinished ...>
[pid 16867] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16867] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16867] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16866] <... futex resumed>)        = 0
[pid 16867] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16867] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16867] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16866] <... futex resumed>)        = 0
[pid 16866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16867] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16866] <... futex resumed>)        = 0
[pid 16866] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16866] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16867] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16867] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16866] <... futex resumed>)        = 0
[pid 16866] exit_group(0)               = ?
[pid 16867] +++ exited with 0 +++
[pid 16866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16868 attached
, child_tidptr=0x55557060c690) = 16868
[pid 16868] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16868] setpgid(0, 0)               = 0
[pid 16868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16868] write(3, "1000", 4)         = 4
[pid 16868] close(3)                    = 0
executing program
[pid 16868] write(1, "executing program\n", 18) = 18
[pid 16868] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16868] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16868] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16868] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16868] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16868] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16868] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16869 attached
 => {parent_tid=[16869]}, 88) = 16869
[pid 16869] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16869] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16869] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16868] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16869] <... futex resumed>)        = 0
[pid 16868] <... futex resumed>)        = 1
[pid 16869] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16869] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16869] <... futex resumed>)        = 0
[pid 16869] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16869] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16868] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16869] <... futex resumed>)        = 0
[pid 16869] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16869] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16868] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16869] <... futex resumed>)        = 0
[pid 16869] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16868] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16869] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16869] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16869] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16868] <... futex resumed>)        = 0
[pid 16868] exit_group(0)               = ?
[pid 16869] <... futex resumed>)        = ?
[pid 16869] +++ exited with 0 +++
[pid 16868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16870 attached
, child_tidptr=0x55557060c690) = 16870
[pid 16870] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16870] setpgid(0, 0)               = 0
[pid 16870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16870] write(3, "1000", 4)         = 4
[pid 16870] close(3)                    = 0
executing program
[pid 16870] write(1, "executing program\n", 18) = 18
[pid 16870] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16870] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16870] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16870] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16870] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16870] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16870] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16871]}, 88) = 16871
./strace-static-x86_64: Process 16871 attached
[pid 16870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16871] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16871] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16871] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16870] <... futex resumed>)        = 0
[pid 16870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16871] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16870] <... futex resumed>)        = 0
[pid 16870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16871] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16870] <... futex resumed>)        = 0
[pid 16870] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16870] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16871] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16871] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16870] <... futex resumed>)        = 0
[pid 16870] exit_group(0)               = ?
[pid 16871] +++ exited with 0 +++
[pid 16870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16872
./strace-static-x86_64: Process 16872 attached
[pid 16872] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16872] setpgid(0, 0)               = 0
[pid 16872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16872] write(3, "1000", 4)         = 4
[pid 16872] close(3)                    = 0
[pid 16872] write(1, "executing program\n", 18executing program
) = 18
[pid 16872] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16872] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16872] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16872] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16872] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16872] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16872] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16873 attached
 => {parent_tid=[16873]}, 88) = 16873
[pid 16873] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16873] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16873] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16872] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16873] <... futex resumed>)        = 0
[pid 16873] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16873] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16873] <... futex resumed>)        = 0
[pid 16873] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16873] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16873] <... futex resumed>)        = 0
[pid 16873] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16873] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16872] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16873] <... futex resumed>)        = 0
[pid 16873] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16873] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16873] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16872] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16872] exit_group(0)               = ?
[pid 16873] <... futex resumed>)        = ?
[pid 16873] +++ exited with 0 +++
[pid 16872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16874
./strace-static-x86_64: Process 16874 attached
[pid 16874] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16874] setpgid(0, 0)               = 0
[pid 16874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16874] write(3, "1000", 4)         = 4
[pid 16874] close(3)                    = 0
[pid 16874] write(1, "executing program\n", 18executing program
) = 18
[pid 16874] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16874] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16874] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16874] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16874] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16874] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16874] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16875]}, 88) = 16875
[pid 16874] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16875 attached
 <unfinished ...>
[pid 16875] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16875] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16875] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16874] <... futex resumed>)        = 0
[pid 16874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16875] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16874] <... futex resumed>)        = 0
[pid 16874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16875] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16874] <... futex resumed>)        = 0
[pid 16874] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16874] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16875] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16875] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16874] <... futex resumed>)        = 0
[pid 16874] exit_group(0)               = ?
[pid 16875] +++ exited with 0 +++
[pid 16874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16876 attached
, child_tidptr=0x55557060c690) = 16876
[pid 16876] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16876] setpgid(0, 0)               = 0
[pid 16876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16876] write(3, "1000", 4)         = 4
[pid 16876] close(3)                    = 0
executing program
[pid 16876] write(1, "executing program\n", 18) = 18
[pid 16876] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16876] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16876] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16876] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16876] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16876] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16876] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16877 attached
 => {parent_tid=[16877]}, 88) = 16877
[pid 16877] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16877] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16877] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16877] <... futex resumed>)        = 0
[pid 16877] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16877] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16877] <... futex resumed>)        = 0
[pid 16877] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16877] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16876] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16877] <... futex resumed>)        = 0
[pid 16877] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16877] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16876] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16877] <... futex resumed>)        = 0
[pid 16876] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16877] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16877] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16877] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16876] <... futex resumed>)        = 0
[pid 16876] exit_group(0)               = ?
[pid 16877] <... futex resumed>)        = ?
[pid 16877] +++ exited with 0 +++
[pid 16876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16878 attached
, child_tidptr=0x55557060c690) = 16878
[pid 16878] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16878] setpgid(0, 0)               = 0
[pid 16878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16878] write(3, "1000", 4)         = 4
[pid 16878] close(3)                    = 0
executing program
[pid 16878] write(1, "executing program\n", 18) = 18
[pid 16878] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16878] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16878] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16878] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16878] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16878] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16878] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16879 attached
 => {parent_tid=[16879]}, 88) = 16879
[pid 16878] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16879] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16879] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16879] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16879] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16878] <... futex resumed>)        = 0
[pid 16878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16879] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16879] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16878] <... futex resumed>)        = 0
[pid 16878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16879] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16879] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16878] <... futex resumed>)        = 0
[pid 16878] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16878] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16879] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16879] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16879] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16878] <... futex resumed>)        = 0
[pid 16878] exit_group(0)               = ?
[pid 16879] +++ exited with 0 +++
[pid 16878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16880
./strace-static-x86_64: Process 16880 attached
[pid 16880] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16880] setpgid(0, 0)               = 0
[pid 16880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16880] write(3, "1000", 4)         = 4
[pid 16880] close(3)                    = 0
[pid 16880] write(1, "executing program\n", 18executing program
) = 18
[pid 16880] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16880] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16880] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16880] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16880] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16880] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16880] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16881 attached
 => {parent_tid=[16881]}, 88) = 16881
[pid 16881] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16881] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16881] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16880] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16881] <... futex resumed>)        = 0
[pid 16881] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16881] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16881] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16880] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16881] <... futex resumed>)        = 0
[pid 16881] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16881] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16881] <... futex resumed>)        = 0
[pid 16880] <... futex resumed>)        = 1
[pid 16881] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16881] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16880] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16880] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16881] <... futex resumed>)        = 0
[pid 16880] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16881] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16881] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16881] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16880] <... futex resumed>)        = 0
[pid 16880] exit_group(0)               = ?
[pid 16881] <... futex resumed>)        = ?
[pid 16881] +++ exited with 0 +++
[pid 16880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16882
./strace-static-x86_64: Process 16882 attached
[pid 16882] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16882] setpgid(0, 0)               = 0
[pid 16882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16882] write(3, "1000", 4)         = 4
executing program
[pid 16882] close(3)                    = 0
[pid 16882] write(1, "executing program\n", 18) = 18
[pid 16882] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16882] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16882] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16882] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16882] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16882] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16882] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16883]}, 88) = 16883
[pid 16882] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16883 attached
 <unfinished ...>
[pid 16883] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16883] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16883] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16882] <... futex resumed>)        = 0
[pid 16882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16883] <... futex resumed>)        = 1
[pid 16883] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16882] <... futex resumed>)        = 0
[pid 16882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16883] <... futex resumed>)        = 1
[pid 16883] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16882] <... futex resumed>)        = 0
[pid 16882] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16882] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16883] <... futex resumed>)        = 1
[pid 16883] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16883] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16882] <... futex resumed>)        = 0
[pid 16882] exit_group(0)               = ?
[pid 16883] <... futex resumed>)        = ?
[pid 16883] +++ exited with 0 +++
[pid 16882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16884
./strace-static-x86_64: Process 16884 attached
[pid 16884] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16884] setpgid(0, 0)               = 0
[pid 16884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16884] write(3, "1000", 4)         = 4
[pid 16884] close(3)                    = 0
[pid 16884] write(1, "executing program\n", 18executing program
) = 18
[pid 16884] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16884] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16884] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16884] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16884] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16884] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16884] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16885]}, 88) = 16885
[pid 16884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16885 attached
 <unfinished ...>
[pid 16885] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16885] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16884] <... futex resumed>)        = 0
[pid 16884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16885] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16884] <... futex resumed>)        = 0
[pid 16884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16885] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16884] <... futex resumed>)        = 0
[pid 16884] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16884] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16885] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16885] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16884] <... futex resumed>)        = 0
[pid 16884] exit_group(0)               = ?
[pid 16885] +++ exited with 0 +++
[pid 16884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16886 attached
, child_tidptr=0x55557060c690) = 16886
[pid 16886] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16886] setpgid(0, 0)               = 0
[pid 16886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16886] write(3, "1000", 4)         = 4
[pid 16886] close(3)                    = 0
[pid 16886] write(1, "executing program\n", 18executing program
) = 18
[pid 16886] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16886] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16886] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16886] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16886] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16886] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16886] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16887 attached
 => {parent_tid=[16887]}, 88) = 16887
[pid 16887] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16887] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16886] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16887] <... futex resumed>)        = 0
[pid 16887] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16887] <... futex resumed>)        = 0
[pid 16887] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16887] <... futex resumed>)        = 0
[pid 16887] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16886] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16887] <... futex resumed>)        = 0
[pid 16887] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16886] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16887] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16887] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16887] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16886] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16886] exit_group(0)               = ?
[pid 16887] <... futex resumed>)        = ?
[pid 16887] +++ exited with 0 +++
[pid 16886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16888 attached
, child_tidptr=0x55557060c690) = 16888
[pid 16888] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16888] setpgid(0, 0)               = 0
[pid 16888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16888] write(3, "1000", 4)         = 4
[pid 16888] close(3)                    = 0
[pid 16888] write(1, "executing program\n", 18executing program
) = 18
[pid 16888] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16888] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16888] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16888] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16888] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16888] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16888] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16889]}, 88) = 16889
[pid 16888] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16889 attached
 <unfinished ...>
[pid 16889] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16889] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16889] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16888] <... futex resumed>)        = 0
[pid 16888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16889] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16888] <... futex resumed>)        = 0
[pid 16888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16889] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16888] <... futex resumed>)        = 0
[pid 16888] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16888] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16889] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16889] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16888] <... futex resumed>)        = 0
[pid 16888] exit_group(0)               = ?
[pid 16889] +++ exited with 0 +++
[pid 16888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16890 attached
, child_tidptr=0x55557060c690) = 16890
[pid 16890] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16890] setpgid(0, 0)               = 0
[pid 16890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16890] write(3, "1000", 4)         = 4
[pid 16890] close(3)                    = 0
[pid 16890] write(1, "executing program\n", 18executing program
) = 18
[pid 16890] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16890] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16890] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16890] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16890] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16890] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16890] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16891 attached
 => {parent_tid=[16891]}, 88) = 16891
[pid 16891] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16890] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16891] <... futex resumed>)        = 0
[pid 16890] <... futex resumed>)        = 1
[pid 16891] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16891] <... futex resumed>)        = 0
[pid 16890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16891] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16890] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16891] <... futex resumed>)        = 0
[pid 16890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16891] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16890] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16890] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16891] <... futex resumed>)        = 0
[pid 16890] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16891] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16891] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16891] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16890] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16890] exit_group(0)               = ?
[pid 16891] <... futex resumed>)        = ?
[pid 16891] +++ exited with 0 +++
[pid 16890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16892 attached
, child_tidptr=0x55557060c690) = 16892
[pid 16892] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16892] setpgid(0, 0)               = 0
[pid 16892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16892] write(3, "1000", 4)         = 4
[pid 16892] close(3)                    = 0
executing program
[pid 16892] write(1, "executing program\n", 18) = 18
[pid 16892] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16892] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16892] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16892] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16892] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16892] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16892] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16893 attached
 => {parent_tid=[16893]}, 88) = 16893
[pid 16892] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16893] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16893] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16893] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16892] <... futex resumed>)        = 0
[pid 16892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16893] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16892] <... futex resumed>)        = 0
[pid 16892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16893] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16893] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16892] <... futex resumed>)        = 0
[pid 16892] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16892] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16893] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16893] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16893] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16892] <... futex resumed>)        = 0
[pid 16892] exit_group(0)               = ?
[pid 16893] +++ exited with 0 +++
[pid 16892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16894
./strace-static-x86_64: Process 16894 attached
[pid 16894] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16894] setpgid(0, 0)               = 0
[pid 16894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16894] write(3, "1000", 4)         = 4
[pid 16894] close(3)                    = 0
[pid 16894] write(1, "executing program\n", 18executing program
) = 18
[pid 16894] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16894] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16894] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16894] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16894] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16894] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16894] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16895 attached
 => {parent_tid=[16895]}, 88) = 16895
[pid 16895] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16895] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16895] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16894] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16895] <... futex resumed>)        = 0
[pid 16895] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16895] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16895] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16894] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16895] <... futex resumed>)        = 0
[pid 16895] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16895] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16895] <... futex resumed>)        = 0
[pid 16895] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16895] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16895] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16894] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16894] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16895] <... futex resumed>)        = 0
[pid 16894] <... futex resumed>)        = 1
[pid 16895] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16894] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16895] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16895] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16895] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16894] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16894] exit_group(0)               = ?
[pid 16895] <... futex resumed>)        = ?
[pid 16895] +++ exited with 0 +++
[pid 16894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16896 attached
, child_tidptr=0x55557060c690) = 16896
[pid 16896] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16896] setpgid(0, 0)               = 0
[pid 16896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16896] write(3, "1000", 4)         = 4
[pid 16896] close(3)                    = 0
executing program
[pid 16896] write(1, "executing program\n", 18) = 18
[pid 16896] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16896] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16896] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16896] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16896] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16896] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16896] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16897 attached
 <unfinished ...>
[pid 16897] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16896] <... clone3 resumed> => {parent_tid=[16897]}, 88) = 16897
[pid 16897] <... set_robust_list resumed>) = 0
[pid 16897] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16896] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16897] <... futex resumed>)        = 0
[pid 16896] <... futex resumed>)        = 1
[pid 16897] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16897] <... futex resumed>)        = 0
[pid 16897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16896] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16897] <... futex resumed>)        = 0
[pid 16896] <... futex resumed>)        = 1
[pid 16897] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16897] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16897] <... futex resumed>)        = 0
[pid 16896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16897] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16896] <... futex resumed>)        = 0
[pid 16896] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16896] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16897] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16897] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16896] <... futex resumed>)        = 0
[pid 16897] <... futex resumed>)        = 1
[pid 16896] exit_group(0)               = ?
[pid 16897] +++ exited with 0 +++
[pid 16896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16898
./strace-static-x86_64: Process 16898 attached
[pid 16898] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16898] setpgid(0, 0)               = 0
[pid 16898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16898] write(3, "1000", 4)         = 4
[pid 16898] close(3)                    = 0
[pid 16898] write(1, "executing program\n", 18executing program
) = 18
[pid 16898] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16898] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16898] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16898] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16898] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16898] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16898] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16899 attached
 => {parent_tid=[16899]}, 88) = 16899
[pid 16899] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16899] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16899] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16898] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16899] <... futex resumed>)        = 0
[pid 16899] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16899] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16899] <... futex resumed>)        = 0
[pid 16899] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16899] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16899] <... futex resumed>)        = 0
[pid 16898] <... futex resumed>)        = 1
[pid 16899] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16899] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16898] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16899] <... futex resumed>)        = 0
[pid 16899] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16898] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16899] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16899] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16899] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16898] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16898] exit_group(0)               = ?
[pid 16899] <... futex resumed>)        = ?
[pid 16899] +++ exited with 0 +++
[pid 16898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16900 attached
, child_tidptr=0x55557060c690) = 16900
[pid 16900] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16900] setpgid(0, 0)               = 0
[pid 16900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16900] write(3, "1000", 4)         = 4
[pid 16900] close(3)                    = 0
[pid 16900] write(1, "executing program\n", 18executing program
) = 18
[pid 16900] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16900] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16900] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16900] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16900] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16900] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16900] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16901]}, 88) = 16901
[pid 16900] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16901 attached
 <unfinished ...>
[pid 16901] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16901] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16901] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16900] <... futex resumed>)        = 0
[pid 16900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16901] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16900] <... futex resumed>)        = 0
[pid 16900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16901] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16900] <... futex resumed>)        = 0
[pid 16900] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16900] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16901] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16901] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16900] <... futex resumed>)        = 0
[pid 16900] exit_group(0)               = ?
[pid 16901] +++ exited with 0 +++
[pid 16900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16902 attached
, child_tidptr=0x55557060c690) = 16902
[pid 16902] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16902] setpgid(0, 0)               = 0
[pid 16902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16902] write(3, "1000", 4)         = 4
[pid 16902] close(3)                    = 0
[pid 16902] write(1, "executing program\n", 18executing program
) = 18
[pid 16902] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16902] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16902] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16902] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16902] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16902] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16902] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16903 attached
 => {parent_tid=[16903]}, 88) = 16903
[pid 16903] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16903] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16903] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16902] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16903] <... futex resumed>)        = 0
[pid 16903] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16903] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16903] <... futex resumed>)        = 0
[pid 16903] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16903] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16903] <... futex resumed>)        = 0
[pid 16903] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16903] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16902] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16903] <... futex resumed>)        = 0
[pid 16903] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16903] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16903] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16902] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16902] exit_group(0)               = ?
[pid 16903] <... futex resumed>)        = ?
[pid 16903] +++ exited with 0 +++
[pid 16902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16904 attached
, child_tidptr=0x55557060c690) = 16904
[pid 16904] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16904] setpgid(0, 0)               = 0
[pid 16904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16904] write(3, "1000", 4)         = 4
[pid 16904] close(3)                    = 0
[pid 16904] write(1, "executing program\n", 18executing program
) = 18
[pid 16904] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16904] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16904] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16904] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16904] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16904] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16904] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16905 attached
 <unfinished ...>
[pid 16905] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16905] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16904] <... clone3 resumed> => {parent_tid=[16905]}, 88) = 16905
[pid 16904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16905] <... futex resumed>)        = 0
[pid 16904] <... futex resumed>)        = 1
[pid 16905] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16905] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16905] <... futex resumed>)        = 0
[pid 16904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16905] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16905] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16904] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16905] <... futex resumed>)        = 0
[pid 16904] <... futex resumed>)        = 1
[pid 16905] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16905] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16904] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16905] <... futex resumed>)        = 0
[pid 16904] <... futex resumed>)        = 1
[pid 16904] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16905] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16905] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16904] <... futex resumed>)        = 0
[pid 16905] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16904] exit_group(0)               = ?
[pid 16905] <... futex resumed>)        = ?
[pid 16905] +++ exited with 0 +++
[pid 16904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16906 attached
, child_tidptr=0x55557060c690) = 16906
[pid 16906] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16906] setpgid(0, 0)               = 0
[pid 16906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16906] write(3, "1000", 4)         = 4
[pid 16906] close(3)                    = 0
[pid 16906] write(1, "executing program\n", 18executing program
) = 18
[pid 16906] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16906] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16906] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16906] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16906] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16906] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16906] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16907]}, 88) = 16907
[pid 16906] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16907 attached
 <unfinished ...>
[pid 16907] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16907] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16907] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16906] <... futex resumed>)        = 0
[pid 16906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16907] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16906] <... futex resumed>)        = 0
[pid 16906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16907] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16906] <... futex resumed>)        = 0
[pid 16906] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16906] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16907] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16907] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16906] <... futex resumed>)        = 0
[pid 16906] exit_group(0)               = ?
[pid 16907] +++ exited with 0 +++
[pid 16906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16908 attached
, child_tidptr=0x55557060c690) = 16908
[pid 16908] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16908] setpgid(0, 0)               = 0
[pid 16908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16908] write(3, "1000", 4)         = 4
[pid 16908] close(3)                    = 0
[pid 16908] write(1, "executing program\n", 18executing program
) = 18
[pid 16908] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16908] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16908] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16908] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16908] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16908] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16908] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16909 attached
 => {parent_tid=[16909]}, 88) = 16909
[pid 16909] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16909] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16908] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16909] <... futex resumed>)        = 0
[pid 16909] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16909] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16908] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16909] <... futex resumed>)        = 0
[pid 16908] <... futex resumed>)        = 1
[pid 16909] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16909] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16908] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16909] <... futex resumed>)        = 0
[pid 16909] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16908] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16909] <... futex resumed>)        = 0
[pid 16908] <... futex resumed>)        = 1
[pid 16909] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16908] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16909] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16909] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16909] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16908] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16908] exit_group(0)               = ?
[pid 16909] <... futex resumed>)        = ?
[pid 16909] +++ exited with 0 +++
[pid 16908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16910 attached
, child_tidptr=0x55557060c690) = 16910
[pid 16910] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16910] setpgid(0, 0)               = 0
[pid 16910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16910] write(3, "1000", 4)         = 4
[pid 16910] close(3)                    = 0
[pid 16910] write(1, "executing program\n", 18executing program
) = 18
[pid 16910] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16910] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16910] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16910] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16910] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16910] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16910] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16911]}, 88) = 16911
[pid 16910] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16911 attached
 <unfinished ...>
[pid 16911] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16911] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16910] <... futex resumed>)        = 0
[pid 16910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16911] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16910] <... futex resumed>)        = 0
[pid 16910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16911] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16910] <... futex resumed>)        = 0
[pid 16910] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16910] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16911] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16911] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16910] <... futex resumed>)        = 0
[pid 16910] exit_group(0)               = ?
[pid 16911] +++ exited with 0 +++
[pid 16910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16912
./strace-static-x86_64: Process 16912 attached
[pid 16912] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16912] setpgid(0, 0)               = 0
[pid 16912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16912] write(3, "1000", 4)         = 4
[pid 16912] close(3)                    = 0
[pid 16912] write(1, "executing program\n", 18executing program
) = 18
[pid 16912] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16912] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16912] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16912] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16912] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16912] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16912] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16913 attached
 => {parent_tid=[16913]}, 88) = 16913
[pid 16913] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16913] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16912] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16913] <... futex resumed>)        = 0
[pid 16913] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16913] <... futex resumed>)        = 0
[pid 16913] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16913] <... futex resumed>)        = 0
[pid 16913] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16912] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16913] <... futex resumed>)        = 0
[pid 16913] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16912] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16913] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16913] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16913] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16912] exit_group(0)               = ?
[pid 16913] <... futex resumed>)        = ?
[pid 16913] +++ exited with 0 +++
[pid 16912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16914 attached
, child_tidptr=0x55557060c690) = 16914
[pid 16914] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16914] setpgid(0, 0)               = 0
[pid 16914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16914] write(3, "1000", 4)         = 4
[pid 16914] close(3)                    = 0
executing program
[pid 16914] write(1, "executing program\n", 18) = 18
[pid 16914] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16914] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16914] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16914] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16914] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16914] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16914] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16915 attached
 <unfinished ...>
[pid 16915] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16915] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16914] <... clone3 resumed> => {parent_tid=[16915]}, 88) = 16915
[pid 16914] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16915] <... futex resumed>)        = 0
[pid 16915] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16915] <... futex resumed>)        = 0
[pid 16915] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16915] <... futex resumed>)        = 0
[pid 16914] <... futex resumed>)        = 1
[pid 16915] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16915] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16914] <... futex resumed>)        = 0
[pid 16914] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16914] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16915] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16915] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16914] <... futex resumed>)        = 0
[pid 16915] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16914] exit_group(0)               = ?
[pid 16915] <... futex resumed>)        = ?
[pid 16915] +++ exited with 0 +++
[pid 16914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16916 attached
, child_tidptr=0x55557060c690) = 16916
[pid 16916] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16916] setpgid(0, 0)               = 0
[pid 16916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16916] write(3, "1000", 4)         = 4
[pid 16916] close(3)                    = 0
executing program
[pid 16916] write(1, "executing program\n", 18) = 18
[pid 16916] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16916] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16916] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16916] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16916] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16916] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16916] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16917 attached
 => {parent_tid=[16917]}, 88) = 16917
[pid 16917] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16917] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16916] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16917] <... futex resumed>)        = 0
[pid 16917] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16917] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16916] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16917] <... futex resumed>)        = 0
[pid 16917] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16917] <... futex resumed>)        = 0
[pid 16916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16917] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16916] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16916] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16917] <... futex resumed>)        = 0
[pid 16917] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16916] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16917] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16917] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16917] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16916] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16916] exit_group(0)               = ?
[pid 16917] <... futex resumed>)        = ?
[pid 16917] +++ exited with 0 +++
[pid 16916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16918 attached
, child_tidptr=0x55557060c690) = 16918
[pid 16918] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16918] setpgid(0, 0)               = 0
[pid 16918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16918] write(3, "1000", 4)         = 4
executing program
[pid 16918] close(3)                    = 0
[pid 16918] write(1, "executing program\n", 18) = 18
[pid 16918] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16918] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16918] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16918] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16918] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16918] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16918] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16919 attached
 <unfinished ...>
[pid 16919] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16919] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16918] <... clone3 resumed> => {parent_tid=[16919]}, 88) = 16919
[pid 16918] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16919] <... futex resumed>)        = 0
[pid 16918] <... futex resumed>)        = 1
[pid 16919] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16919] <... futex resumed>)        = 0
[pid 16918] <... futex resumed>)        = 1
[pid 16919] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16919] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16919] <... futex resumed>)        = 0
[pid 16918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16919] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16918] <... futex resumed>)        = 0
[pid 16918] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16918] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16919] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16919] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16918] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16919] <... futex resumed>)        = 0
[pid 16918] exit_group(0)               = ?
[pid 16919] +++ exited with 0 +++
[pid 16918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16920 attached
, child_tidptr=0x55557060c690) = 16920
[pid 16920] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16920] setpgid(0, 0)               = 0
[pid 16920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16920] write(3, "1000", 4)         = 4
[pid 16920] close(3)                    = 0
executing program
[pid 16920] write(1, "executing program\n", 18) = 18
[pid 16920] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16920] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16920] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16920] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16920] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16920] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16920] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16921 attached
 => {parent_tid=[16921]}, 88) = 16921
[pid 16921] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16920] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16921] <... set_robust_list resumed>) = 0
[pid 16920] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16921] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16921] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16920] <... futex resumed>)        = 0
[pid 16921] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16921] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16920] <... futex resumed>)        = 0
[pid 16920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16921] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16920] <... futex resumed>)        = 0
[pid 16920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16921] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16920] <... futex resumed>)        = 0
[pid 16920] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16920] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16921] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16921] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16920] <... futex resumed>)        = 0
[pid 16920] exit_group(0)               = ?
[pid 16921] +++ exited with 0 +++
[pid 16920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16922
./strace-static-x86_64: Process 16922 attached
[pid 16922] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16922] setpgid(0, 0)               = 0
[pid 16922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16922] write(3, "1000", 4)         = 4
[pid 16922] close(3)                    = 0
[pid 16922] write(1, "executing program\n", 18executing program
) = 18
[pid 16922] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16922] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16922] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16922] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16922] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16922] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16922] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16923 attached
 => {parent_tid=[16923]}, 88) = 16923
[pid 16923] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16923] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16922] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16923] <... futex resumed>)        = 0
[pid 16922] <... futex resumed>)        = 1
[pid 16923] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16923] <... futex resumed>)        = 0
[pid 16923] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16923] <... futex resumed>)        = 0
[pid 16923] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16922] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16923] <... futex resumed>)        = 0
[pid 16923] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16923] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16923] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16922] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16922] exit_group(0)               = ?
[pid 16923] <... futex resumed>)        = ?
[pid 16923] +++ exited with 0 +++
[pid 16922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16924
./strace-static-x86_64: Process 16924 attached
[pid 16924] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16924] setpgid(0, 0)               = 0
[pid 16924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16924] write(3, "1000", 4)         = 4
[pid 16924] close(3)                    = 0
executing program
[pid 16924] write(1, "executing program\n", 18) = 18
[pid 16924] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16924] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16924] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16924] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16924] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16924] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16924] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16925 attached
 <unfinished ...>
[pid 16925] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16924] <... clone3 resumed> => {parent_tid=[16925]}, 88) = 16925
[pid 16925] <... set_robust_list resumed>) = 0
[pid 16924] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16925] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16924] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16925] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16925] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16925] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16924] <... futex resumed>)        = 0
[pid 16924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16925] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16924] <... futex resumed>)        = 0
[pid 16925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16925] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16925] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16924] <... futex resumed>)        = 0
[pid 16924] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16924] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16925] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16925] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16925] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16924] <... futex resumed>)        = 0
[pid 16924] exit_group(0)               = ?
[pid 16925] <... futex resumed>)        = ?
[pid 16925] +++ exited with 0 +++
[pid 16924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16926
./strace-static-x86_64: Process 16926 attached
[pid 16926] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16926] setpgid(0, 0)               = 0
[pid 16926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16926] write(3, "1000", 4)         = 4
[pid 16926] close(3)                    = 0
[pid 16926] write(1, "executing program\n", 18executing program
) = 18
[pid 16926] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16926] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16926] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16926] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16926] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16926] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16926] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16927 attached
 => {parent_tid=[16927]}, 88) = 16927
[pid 16927] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16927] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16927] <... futex resumed>)        = 0
[pid 16927] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16927] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16926] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16927] <... futex resumed>)        = 0
[pid 16927] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16927] <... futex resumed>)        = 0
[pid 16927] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16926] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16927] <... futex resumed>)        = 0
[pid 16927] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16927] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16927] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16926] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16926] exit_group(0)               = ?
[pid 16927] <... futex resumed>)        = ?
[pid 16927] +++ exited with 0 +++
[pid 16926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16928 attached
, child_tidptr=0x55557060c690) = 16928
[pid 16928] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16928] setpgid(0, 0)               = 0
[pid 16928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16928] write(3, "1000", 4)         = 4
executing program
[pid 16928] close(3)                    = 0
[pid 16928] write(1, "executing program\n", 18) = 18
[pid 16928] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16928] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16928] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16928] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16928] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16928] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16928] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16929]}, 88) = 16929
[pid 16928] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16929 attached
 <unfinished ...>
[pid 16929] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16929] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16929] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16928] <... futex resumed>)        = 0
[pid 16928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16929] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16928] <... futex resumed>)        = 0
[pid 16928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16929] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16928] <... futex resumed>)        = 0
[pid 16928] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16928] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16929] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16929] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16928] <... futex resumed>)        = 0
[pid 16928] exit_group(0)               = ?
[pid 16929] +++ exited with 0 +++
[pid 16928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16930 attached
, child_tidptr=0x55557060c690) = 16930
[pid 16930] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16930] setpgid(0, 0)               = 0
[pid 16930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16930] write(3, "1000", 4)         = 4
[pid 16930] close(3)                    = 0
[pid 16930] write(1, "executing program\n", 18executing program
) = 18
[pid 16930] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16930] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16930] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16930] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16930] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16930] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16930] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16931 attached
 => {parent_tid=[16931]}, 88) = 16931
[pid 16931] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16931] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16930] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16931] <... futex resumed>)        = 0
[pid 16931] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16931] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16930] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16931] <... futex resumed>)        = 0
[pid 16931] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16931] <... futex resumed>)        = 0
[pid 16931] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16930] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16931] <... futex resumed>)        = 0
[pid 16930] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16931] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16931] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16931] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16930] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16930] exit_group(0)               = ?
[pid 16931] <... futex resumed>)        = ?
[pid 16931] +++ exited with 0 +++
[pid 16930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16932 attached
, child_tidptr=0x55557060c690) = 16932
[pid 16932] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16932] setpgid(0, 0)               = 0
[pid 16932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16932] write(3, "1000", 4)         = 4
[pid 16932] close(3)                    = 0
[pid 16932] write(1, "executing program\n", 18executing program
) = 18
[pid 16932] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16932] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16932] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16932] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16932] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16932] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16932] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16933]}, 88) = 16933
[pid 16932] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16933 attached
 <unfinished ...>
[pid 16933] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16933] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16933] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16932] <... futex resumed>)        = 0
[pid 16932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16933] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16932] <... futex resumed>)        = 0
[pid 16932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16933] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16932] <... futex resumed>)        = 0
[pid 16932] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16932] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16933] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16933] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16932] <... futex resumed>)        = 0
[pid 16932] exit_group(0)               = ?
[pid 16933] +++ exited with 0 +++
[pid 16932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16934
./strace-static-x86_64: Process 16934 attached
[pid 16934] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16934] setpgid(0, 0)               = 0
[pid 16934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16934] write(3, "1000", 4)         = 4
[pid 16934] close(3)                    = 0
[pid 16934] write(1, "executing program\n", 18executing program
) = 18
[pid 16934] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16934] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16934] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16934] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16934] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16934] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16934] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16935 attached
 => {parent_tid=[16935]}, 88) = 16935
[pid 16935] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16935] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16934] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16935] <... futex resumed>)        = 0
[pid 16935] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16935] <... futex resumed>)        = 0
[pid 16935] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16935] <... futex resumed>)        = 0
[pid 16935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16934] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16935] <... futex resumed>)        = 0
[pid 16935] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16934] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16935] <... futex resumed>)        = 0
[pid 16935] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16934] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16935] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16935] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16935] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16934] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16934] exit_group(0)               = ?
[pid 16935] <... futex resumed>)        = ?
[pid 16935] +++ exited with 0 +++
[pid 16934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16936 attached
, child_tidptr=0x55557060c690) = 16936
[pid 16936] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16936] setpgid(0, 0)               = 0
[pid 16936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16936] write(3, "1000", 4)         = 4
[pid 16936] close(3)                    = 0
[pid 16936] write(1, "executing program\n", 18executing program
) = 18
[pid 16936] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16936] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16936] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16936] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16936] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16936] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16936] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16937]}, 88) = 16937
[pid 16936] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16937 attached
 <unfinished ...>
[pid 16937] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16937] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16937] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16936] <... futex resumed>)        = 0
[pid 16936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16937] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16936] <... futex resumed>)        = 0
[pid 16936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16937] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16936] <... futex resumed>)        = 0
[pid 16936] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16936] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16937] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16937] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16936] <... futex resumed>)        = 0
[pid 16936] exit_group(0)               = ?
[pid 16937] +++ exited with 0 +++
[pid 16936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16938 attached
, child_tidptr=0x55557060c690) = 16938
[pid 16938] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16938] setpgid(0, 0)               = 0
[pid 16938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16938] write(3, "1000", 4)         = 4
[pid 16938] close(3)                    = 0
executing program
[pid 16938] write(1, "executing program\n", 18) = 18
[pid 16938] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16938] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16938] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16938] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16938] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16938] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16938] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16939 attached
 => {parent_tid=[16939]}, 88) = 16939
[pid 16939] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16939] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16939] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16938] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16939] <... futex resumed>)        = 0
[pid 16939] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16939] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16939] <... futex resumed>)        = 0
[pid 16939] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16939] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16939] <... futex resumed>)        = 0
[pid 16939] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16939] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16938] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16939] <... futex resumed>)        = 0
[pid 16938] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16939] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16939] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16938] <... futex resumed>)        = 0
[pid 16938] exit_group(0)               = ?
[pid 16939] +++ exited with 0 +++
[pid 16938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16940 attached
, child_tidptr=0x55557060c690) = 16940
[pid 16940] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16940] setpgid(0, 0)               = 0
[pid 16940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16940] write(3, "1000", 4)         = 4
executing program
[pid 16940] close(3)                    = 0
[pid 16940] write(1, "executing program\n", 18) = 18
[pid 16940] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16940] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16940] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16940] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16940] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16940] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16940] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16941 attached
 <unfinished ...>
[pid 16941] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16940] <... clone3 resumed> => {parent_tid=[16941]}, 88) = 16941
[pid 16941] <... set_robust_list resumed>) = 0
[pid 16940] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16941] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16940] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16941] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16941] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16940] <... futex resumed>)        = 0
[pid 16941] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16940] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16941] <... futex resumed>)        = 0
[pid 16940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16941] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16940] <... futex resumed>)        = 0
[pid 16941] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16940] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16941] <... futex resumed>)        = 0
[pid 16940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16941] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16941] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16940] <... futex resumed>)        = 0
[pid 16940] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16940] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16941] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16941] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16940] <... futex resumed>)        = 0
[pid 16940] exit_group(0)               = ?
[pid 16941] +++ exited with 0 +++
[pid 16940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16942 attached
, child_tidptr=0x55557060c690) = 16942
[pid 16942] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16942] setpgid(0, 0)               = 0
[pid 16942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16942] write(3, "1000", 4)         = 4
[pid 16942] close(3)                    = 0
[pid 16942] write(1, "executing program\n", 18executing program
) = 18
[pid 16942] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16942] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16942] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16942] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16942] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16942] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16942] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16943 attached
 => {parent_tid=[16943]}, 88) = 16943
[pid 16943] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16943] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16942] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16943] <... futex resumed>)        = 0
[pid 16943] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16943] <... futex resumed>)        = 0
[pid 16943] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16943] <... futex resumed>)        = 0
[pid 16943] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16942] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16943] <... futex resumed>)        = 0
[pid 16942] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16943] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16943] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16943] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16942] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16942] exit_group(0)               = ?
[pid 16943] <... futex resumed>)        = ?
[pid 16943] +++ exited with 0 +++
[pid 16942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16944 attached
, child_tidptr=0x55557060c690) = 16944
[pid 16944] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16944] setpgid(0, 0)               = 0
[pid 16944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16944] write(3, "1000", 4)         = 4
[pid 16944] close(3)                    = 0
[pid 16944] write(1, "executing program\n", 18executing program
) = 18
[pid 16944] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16944] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16944] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16944] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16944] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16944] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16944] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16945]}, 88) = 16945
[pid 16944] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16945 attached
 <unfinished ...>
[pid 16945] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16945] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16945] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16944] <... futex resumed>)        = 0
[pid 16944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16945] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16944] <... futex resumed>)        = 0
[pid 16944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16945] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16944] <... futex resumed>)        = 0
[pid 16944] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16944] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16945] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16945] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16944] <... futex resumed>)        = 0
[pid 16944] exit_group(0)               = ?
[pid 16945] +++ exited with 0 +++
[pid 16944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16946 attached
, child_tidptr=0x55557060c690) = 16946
[pid 16946] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16946] setpgid(0, 0)               = 0
[pid 16946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16946] write(3, "1000", 4)         = 4
[pid 16946] close(3)                    = 0
[pid 16946] write(1, "executing program\n", 18executing program
) = 18
[pid 16946] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16946] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16946] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16946] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16946] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16946] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16946] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16947 attached
 => {parent_tid=[16947]}, 88) = 16947
[pid 16947] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16947] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16947] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16946] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16947] <... futex resumed>)        = 0
[pid 16947] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16947] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16947] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16947] <... futex resumed>)        = 0
[pid 16947] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16947] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16947] <... futex resumed>)        = 0
[pid 16946] <... futex resumed>)        = 1
[pid 16947] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16947] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16946] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16947] <... futex resumed>)        = 0
[pid 16946] <... futex resumed>)        = 1
[pid 16947] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16946] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16947] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16947] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16947] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16946] exit_group(0)               = ?
[pid 16947] <... futex resumed>)        = ?
[pid 16947] +++ exited with 0 +++
[pid 16946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16948 attached
, child_tidptr=0x55557060c690) = 16948
[pid 16948] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16948] setpgid(0, 0)               = 0
[pid 16948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16948] write(3, "1000", 4)         = 4
[pid 16948] close(3)                    = 0
executing program
[pid 16948] write(1, "executing program\n", 18) = 18
[pid 16948] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16948] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16948] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16948] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16948] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16948] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16948] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16949 attached
 <unfinished ...>
[pid 16949] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16948] <... clone3 resumed> => {parent_tid=[16949]}, 88) = 16949
[pid 16949] <... set_robust_list resumed>) = 0
[pid 16949] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16949] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16948] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16949] <... futex resumed>)        = 0
[pid 16949] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16949] <... futex resumed>)        = 0
[pid 16949] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16948] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16949] <... futex resumed>)        = 0
[pid 16948] <... futex resumed>)        = 1
[pid 16949] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16949] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16948] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16949] <... futex resumed>)        = 0
[pid 16948] <... futex resumed>)        = 1
[pid 16949] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16949] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16948] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16949] <... futex resumed>)        = 0
[pid 16948] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16949] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16949] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16948] <... futex resumed>)        = 0
[pid 16949] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16948] exit_group(0)               = ?
[pid 16949] <... futex resumed>)        = ?
[pid 16949] +++ exited with 0 +++
[pid 16948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16950 attached
, child_tidptr=0x55557060c690) = 16950
[pid 16950] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16950] setpgid(0, 0)               = 0
[pid 16950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16950] write(3, "1000", 4)         = 4
[pid 16950] close(3)                    = 0
[pid 16950] write(1, "executing program\n", 18executing program
) = 18
[pid 16950] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16950] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16950] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16950] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16951 attached
 => {parent_tid=[16951]}, 88) = 16951
[pid 16951] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16951] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16951] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16950] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16951] <... futex resumed>)        = 0
[pid 16951] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16951] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16951] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16950] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16951] <... futex resumed>)        = 0
[pid 16951] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16951] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16951] <... futex resumed>)        = 0
[pid 16951] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16951] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16950] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16951] <... futex resumed>)        = 0
[pid 16951] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16950] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16951] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16951] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16951] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16950] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16950] exit_group(0)               = ?
[pid 16951] <... futex resumed>)        = ?
[pid 16951] +++ exited with 0 +++
[pid 16950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16952 attached
, child_tidptr=0x55557060c690) = 16952
[pid 16952] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16952] setpgid(0, 0)               = 0
[pid 16952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16952] write(3, "1000", 4)         = 4
executing program
[pid 16952] close(3)                    = 0
[pid 16952] write(1, "executing program\n", 18) = 18
[pid 16952] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16952] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16952] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16952] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16952] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16952] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16952] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16953 attached
 <unfinished ...>
[pid 16953] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16952] <... clone3 resumed> => {parent_tid=[16953]}, 88) = 16953
[pid 16953] <... set_robust_list resumed>) = 0
[pid 16953] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16953] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16952] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16953] <... futex resumed>)        = 0
[pid 16953] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16953] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16953] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16952] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16953] <... futex resumed>)        = 0
[pid 16953] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16953] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16952] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16953] <... futex resumed>)        = 0
[pid 16953] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16953] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16952] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16952] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16953] <... futex resumed>)        = 0
[pid 16952] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16953] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16953] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16952] <... futex resumed>)        = 0
[pid 16953] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16952] exit_group(0)               = ?
[pid 16953] <... futex resumed>)        = ?
[pid 16953] +++ exited with 0 +++
[pid 16952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16954
./strace-static-x86_64: Process 16954 attached
[pid 16954] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16954] setpgid(0, 0)               = 0
[pid 16954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16954] write(3, "1000", 4)         = 4
[pid 16954] close(3)                    = 0
[pid 16954] write(1, "executing program\n", 18executing program
) = 18
[pid 16954] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16954] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16954] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16954] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16954] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16954] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16954] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16955 attached
 => {parent_tid=[16955]}, 88) = 16955
[pid 16955] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16955] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16955] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16954] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16955] <... futex resumed>)        = 0
[pid 16954] <... futex resumed>)        = 1
[pid 16955] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16955] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16955] <... futex resumed>)        = 0
[pid 16955] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16955] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16955] <... futex resumed>)        = 0
[pid 16954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16955] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16955] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16954] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16954] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16955] <... futex resumed>)        = 0
[pid 16954] <... futex resumed>)        = 1
[pid 16955] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16954] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16955] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16955] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16955] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16954] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16954] exit_group(0)               = ?
[pid 16955] <... futex resumed>)        = ?
[pid 16955] +++ exited with 0 +++
[pid 16954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16956 attached
, child_tidptr=0x55557060c690) = 16956
[pid 16956] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16956] setpgid(0, 0)               = 0
[pid 16956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16956] write(3, "1000", 4)         = 4
[pid 16956] close(3)                    = 0
[pid 16956] write(1, "executing program\n", 18executing program
) = 18
[pid 16956] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16956] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16956] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16956] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16956] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16956] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16956] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16957]}, 88) = 16957
[pid 16956] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16957 attached
 <unfinished ...>
[pid 16957] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16957] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16957] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16956] <... futex resumed>)        = 0
[pid 16956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16957] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16956] <... futex resumed>)        = 0
[pid 16956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16957] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16956] <... futex resumed>)        = 0
[pid 16956] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16956] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16957] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16957] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16956] <... futex resumed>)        = 0
[pid 16956] exit_group(0)               = ?
[pid 16957] +++ exited with 0 +++
[pid 16956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16958 attached
, child_tidptr=0x55557060c690) = 16958
[pid 16958] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16958] setpgid(0, 0)               = 0
[pid 16958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16958] write(3, "1000", 4)         = 4
[pid 16958] close(3)                    = 0
[pid 16958] write(1, "executing program\n", 18executing program
) = 18
[pid 16958] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16958] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16958] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16958] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16958] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16958] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16958] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16959 attached
 => {parent_tid=[16959]}, 88) = 16959
[pid 16959] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16959] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16958] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16959] <... futex resumed>)        = 0
[pid 16959] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16959] <... futex resumed>)        = 0
[pid 16959] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16959] <... futex resumed>)        = 0
[pid 16959] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16958] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16959] <... futex resumed>)        = 0
[pid 16959] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16958] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16959] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16959] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16959] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16958] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16958] exit_group(0)               = ?
[pid 16959] <... futex resumed>)        = ?
[pid 16959] +++ exited with 0 +++
[pid 16958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16960 attached
, child_tidptr=0x55557060c690) = 16960
[pid 16960] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16960] setpgid(0, 0)               = 0
[pid 16960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16960] write(3, "1000", 4)         = 4
executing program
[pid 16960] close(3)                    = 0
[pid 16960] write(1, "executing program\n", 18) = 18
[pid 16960] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16960] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16960] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16960] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16960] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16960] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16960] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16961 attached
 => {parent_tid=[16961]}, 88) = 16961
[pid 16960] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16961] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16961] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16961] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16960] <... futex resumed>)        = 0
[pid 16960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16961] <... futex resumed>)        = 1
[pid 16960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16961] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16960] <... futex resumed>)        = 0
[pid 16960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16961] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16961] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16960] <... futex resumed>)        = 0
[pid 16960] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16960] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16961] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16961] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16961] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16960] <... futex resumed>)        = 0
[pid 16960] exit_group(0)               = ?
[pid 16961] <... futex resumed>)        = ?
[pid 16961] +++ exited with 0 +++
[pid 16960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16962
./strace-static-x86_64: Process 16962 attached
[pid 16962] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16962] setpgid(0, 0)               = 0
[pid 16962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16962] write(3, "1000", 4)         = 4
[pid 16962] close(3)                    = 0
[pid 16962] write(1, "executing program\n", 18executing program
) = 18
[pid 16962] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16962] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16962] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16962] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16962] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16962] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16962] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16963 attached
 => {parent_tid=[16963]}, 88) = 16963
[pid 16963] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16962] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16963] <... set_robust_list resumed>) = 0
[pid 16963] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16963] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16962] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16963] <... futex resumed>)        = 0
[pid 16963] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16963] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16963] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16962] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16963] <... futex resumed>)        = 0
[pid 16963] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16963] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16963] <... futex resumed>)        = 0
[pid 16963] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16963] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16962] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16963] <... futex resumed>)        = 0
[pid 16963] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16962] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16963] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16963] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16963] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16962] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16962] exit_group(0)               = ?
[pid 16963] <... futex resumed>)        = ?
[pid 16963] +++ exited with 0 +++
[pid 16962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16964 attached
, child_tidptr=0x55557060c690) = 16964
[pid 16964] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16964] setpgid(0, 0)               = 0
[pid 16964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16964] write(3, "1000", 4)         = 4
[pid 16964] close(3)                    = 0
executing program
[pid 16964] write(1, "executing program\n", 18) = 18
[pid 16964] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16964] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16964] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16964] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16964] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16964] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16964] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16965 attached
 <unfinished ...>
[pid 16965] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16964] <... clone3 resumed> => {parent_tid=[16965]}, 88) = 16965
[pid 16964] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16965] <... futex resumed>)        = 0
[pid 16965] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16965] <... futex resumed>)        = 0
[pid 16964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16965] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16964] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16965] <... futex resumed>)        = 0
[pid 16965] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16964] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16965] <... futex resumed>)        = 0
[pid 16964] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16965] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16965] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16965] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16964] <... futex resumed>)        = 0
[pid 16964] exit_group(0)               = ?
[pid 16965] <... futex resumed>)        = ?
[pid 16965] +++ exited with 0 +++
[pid 16964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>executing program
executing program
) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16966 attached
, child_tidptr=0x55557060c690) = 16966
[pid 16966] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16966] setpgid(0, 0)               = 0
[pid 16966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16966] write(3, "1000", 4)         = 4
[pid 16966] close(3)                    = 0
[pid 16966] write(1, "executing program\n", 18) = 18
[pid 16966] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16966] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16966] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16966] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16966] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16966] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16966] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16967]}, 88) = 16967
[pid 16966] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16967 attached
 <unfinished ...>
[pid 16967] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16967] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16967] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16966] <... futex resumed>)        = 0
[pid 16966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16967] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16966] <... futex resumed>)        = 0
[pid 16966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16967] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16966] <... futex resumed>)        = 0
[pid 16966] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16966] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16967] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16967] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16966] <... futex resumed>)        = 0
[pid 16966] exit_group(0)               = ?
[pid 16967] +++ exited with 0 +++
[pid 16966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16968
./strace-static-x86_64: Process 16968 attached
[pid 16968] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16968] setpgid(0, 0)               = 0
[pid 16968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16968] write(3, "1000", 4)         = 4
[pid 16968] close(3)                    = 0
[pid 16968] write(1, "executing program\n", 18) = 18
[pid 16968] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16968] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16968] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16968] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16968] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16968] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16968] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16969 attached
 => {parent_tid=[16969]}, 88) = 16969
[pid 16969] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16969] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16969] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16968] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16969] <... futex resumed>)        = 0
[pid 16969] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16969] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16969] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16968] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16969] <... futex resumed>)        = 0
[pid 16969] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16969] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16968] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16969] <... futex resumed>)        = 0
[pid 16969] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16969] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16968] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16969] <... futex resumed>)        = 0
[pid 16968] <... futex resumed>)        = 1
[pid 16969] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16968] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16969] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16969] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16969] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16968] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16968] exit_group(0)               = ?
[pid 16969] <... futex resumed>)        = ?
[pid 16969] +++ exited with 0 +++
executing program
[pid 16968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16970 attached
, child_tidptr=0x55557060c690) = 16970
[pid 16970] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16970] setpgid(0, 0)               = 0
[pid 16970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16970] write(3, "1000", 4)         = 4
[pid 16970] close(3)                    = 0
[pid 16970] write(1, "executing program\n", 18) = 18
[pid 16970] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16970] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16970] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16970] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16971 attached
 => {parent_tid=[16971]}, 88) = 16971
[pid 16971] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16971] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16970] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16971] <... futex resumed>)        = 0
[pid 16971] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16971] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16970] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16971] <... futex resumed>)        = 0
[pid 16971] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16970] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16971] <... futex resumed>)        = 0
[pid 16971] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16970] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16970] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16971] <... futex resumed>)        = 0
[pid 16971] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16970] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16971] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16971] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16971] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16970] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16970] exit_group(0)               = ?
[pid 16971] <... futex resumed>)        = ?
[pid 16971] +++ exited with 0 +++
[pid 16970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16972 attached
, child_tidptr=0x55557060c690) = 16972
[pid 16972] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16972] setpgid(0, 0)               = 0
[pid 16972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16972] write(3, "1000", 4)         = 4
[pid 16972] close(3)                    = 0
executing program
[pid 16972] write(1, "executing program\n", 18) = 18
[pid 16972] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16972] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16972] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16972] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16972] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16972] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16972] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16973 attached
 => {parent_tid=[16973]}, 88) = 16973
[pid 16973] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16972] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16973] <... set_robust_list resumed>) = 0
[pid 16972] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16973] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16973] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16972] <... futex resumed>)        = 0
[pid 16973] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16973] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16972] <... futex resumed>)        = 0
[pid 16972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16973] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16972] <... futex resumed>)        = 0
[pid 16972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16973] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16972] <... futex resumed>)        = 0
[pid 16972] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16972] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16973] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16973] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16972] <... futex resumed>)        = 0
[pid 16972] exit_group(0)               = ?
[pid 16973] +++ exited with 0 +++
[pid 16972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16974
./strace-static-x86_64: Process 16974 attached
[pid 16974] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16974] setpgid(0, 0)               = 0
[pid 16974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16974] write(3, "1000", 4)         = 4
[pid 16974] close(3)                    = 0
[pid 16974] write(1, "executing program\n", 18executing program
) = 18
[pid 16974] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16974] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16974] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16974] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16974] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16974] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16974] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16975 attached
 => {parent_tid=[16975]}, 88) = 16975
[pid 16975] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16974] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16975] <... set_robust_list resumed>) = 0
[pid 16975] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16975] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16974] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16975] <... futex resumed>)        = 0
[pid 16975] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16975] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16975] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16974] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16975] <... futex resumed>)        = 0
[pid 16974] <... futex resumed>)        = 1
[pid 16975] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16975] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16975] <... futex resumed>)        = 0
[pid 16974] <... futex resumed>)        = 1
[pid 16975] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16975] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16974] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16975] <... futex resumed>)        = 0
[pid 16975] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16974] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16975] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16975] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16975] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16974] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16974] exit_group(0)               = ?
[pid 16975] <... futex resumed>)        = ?
[pid 16975] +++ exited with 0 +++
[pid 16974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16976 attached
, child_tidptr=0x55557060c690) = 16976
[pid 16976] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16976] setpgid(0, 0)               = 0
[pid 16976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16976] write(3, "1000", 4)         = 4
[pid 16976] close(3)                    = 0
[pid 16976] write(1, "executing program\n", 18executing program
) = 18
[pid 16976] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16976] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16976] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16976] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16976] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16976] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16976] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16977]}, 88) = 16977
[pid 16976] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16977 attached
 <unfinished ...>
[pid 16977] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16977] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16977] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16976] <... futex resumed>)        = 0
[pid 16977] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16977] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16976] <... futex resumed>)        = 0
[pid 16977] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 16976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16977] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 16977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16976] <... futex resumed>)        = 0
[pid 16977] <... futex resumed>)        = 1
[pid 16976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16977] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16976] <... futex resumed>)        = 0
[pid 16977] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16976] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16977] <... futex resumed>)        = 0
[pid 16976] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16976] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16977] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16977] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16976] <... futex resumed>)        = 0
[pid 16977] <... futex resumed>)        = 1
[pid 16976] exit_group(0 <unfinished ...>
[pid 16977] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16976] <... exit_group resumed>)   = ?
[pid 16977] <... futex resumed>)        = -1 (errno 18446744073709551414)
[pid 16977] +++ exited with 0 +++
[pid 16976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16978
./strace-static-x86_64: Process 16978 attached
[pid 16978] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16978] setpgid(0, 0)               = 0
[pid 16978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16978] write(3, "1000", 4)         = 4
[pid 16978] close(3)                    = 0
[pid 16978] write(1, "executing program\n", 18executing program
) = 18
[pid 16978] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16978] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16978] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16978] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16978] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16978] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16978] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16979]}, 88) = 16979
[pid 16978] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16979 attached
 <unfinished ...>
[pid 16979] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16979] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16979] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16978] <... futex resumed>)        = 0
[pid 16978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16979] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16978] <... futex resumed>)        = 0
[pid 16978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16979] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16978] <... futex resumed>)        = 0
[pid 16978] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16978] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16979] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16979] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16978] <... futex resumed>)        = 0
[pid 16978] exit_group(0)               = ?
[pid 16979] +++ exited with 0 +++
[pid 16978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16980 attached
, child_tidptr=0x55557060c690) = 16980
[pid 16980] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16980] setpgid(0, 0)               = 0
[pid 16980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16980] write(3, "1000", 4)         = 4
[pid 16980] close(3)                    = 0
[pid 16980] write(1, "executing program\n", 18executing program
) = 18
[pid 16980] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16980] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16980] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16980] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16980] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16980] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16980] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16981 attached
 => {parent_tid=[16981]}, 88) = 16981
[pid 16981] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16981] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16981] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16980] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16981] <... futex resumed>)        = 0
[pid 16980] <... futex resumed>)        = 1
[pid 16981] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16981] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16981] <... futex resumed>)        = 0
[pid 16981] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16981] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16981] <... futex resumed>)        = 0
[pid 16981] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16981] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16980] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16981] <... futex resumed>)        = 0
[pid 16980] <... futex resumed>)        = 1
[pid 16981] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 16980] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16981] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 16981] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16981] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16980] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16980] exit_group(0)               = ?
[pid 16981] <... futex resumed>)        = ?
[pid 16981] +++ exited with 0 +++
[pid 16980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16982 attached
, child_tidptr=0x55557060c690) = 16982
[pid 16982] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16982] setpgid(0, 0)               = 0
[pid 16982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16982] write(3, "1000", 4)         = 4
[pid 16982] close(3)                    = 0
[pid 16982] write(1, "executing program\n", 18executing program
) = 18
[pid 16982] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16982] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16982] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16982] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16982] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16982] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16982] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16983]}, 88) = 16983
[pid 16982] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16983 attached
 <unfinished ...>
[pid 16983] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16983] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16983] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16982] <... futex resumed>)        = 0
[pid 16982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16983] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16982] <... futex resumed>)        = 0
[pid 16982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16983] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16982] <... futex resumed>)        = 0
[pid 16982] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16982] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16983] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16983] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16982] <... futex resumed>)        = 0
[pid 16982] exit_group(0 <unfinished ...>
[pid 16983] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16982] <... exit_group resumed>)   = ?
[pid 16983] <... futex resumed>)        = ?
[pid 16983] +++ exited with 0 +++
[pid 16982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16984 attached
, child_tidptr=0x55557060c690) = 16984
[pid 16984] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16984] setpgid(0, 0)               = 0
[pid 16984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16984] write(3, "1000", 4)         = 4
[pid 16984] close(3)                    = 0
[pid 16984] write(1, "executing program\n", 18executing program
) = 18
[pid 16984] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16984] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16984] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16984] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16984] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16984] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16984] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16985 attached
 => {parent_tid=[16985]}, 88) = 16985
[pid 16985] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 16984] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 16985] <... set_robust_list resumed>) = 0
[pid 16985] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16985] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16984] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 16984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16985] <... futex resumed>)        = 0
[pid 16985] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16985] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16985] <... futex resumed>)        = 0
[pid 16985] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16985] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16985] <... futex resumed>)        = 0
[pid 16984] <... futex resumed>)        = 1
[pid 16985] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 16984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16985] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 16985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16985] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16984] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16984] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16985] <... futex resumed>)        = 0
[pid 16984] <... futex resumed>)        = 1
[pid 16984] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16985] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16985] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16985] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16984] <... futex resumed>)        = 0
[pid 16984] exit_group(0)               = ?
[pid 16985] <... futex resumed>)        = ?
[pid 16985] +++ exited with 0 +++
[pid 16984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16986 attached
, child_tidptr=0x55557060c690) = 16986
[pid 16986] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16986] setpgid(0, 0)               = 0
[pid 16986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16986] write(3, "1000", 4)         = 4
[pid 16986] close(3)                    = 0
[pid 16986] write(1, "executing program\n", 18executing program
) = 18
[pid 16986] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16986] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16986] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16986] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16986] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16986] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16986] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16987]}, 88) = 16987
[pid 16986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16987 attached
 <unfinished ...>
[pid 16987] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16987] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16987] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16986] <... futex resumed>)        = 0
[pid 16986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16987] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16986] <... futex resumed>)        = 0
[pid 16986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16987] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16986] <... futex resumed>)        = 0
[pid 16986] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16986] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16987] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16987] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16986] <... futex resumed>)        = 0
[pid 16986] exit_group(0)               = ?
[pid 16987] +++ exited with 0 +++
[pid 16986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16988 attached
, child_tidptr=0x55557060c690) = 16988
[pid 16988] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16988] setpgid(0, 0)               = 0
[pid 16988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16988] write(3, "1000", 4)         = 4
[pid 16988] close(3)                    = 0
[pid 16988] write(1, "executing program\n", 18executing program
) = 18
[pid 16988] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16988] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16988] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16988] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16988] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16988] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16988] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16989 attached
 => {parent_tid=[16989]}, 88) = 16989
[pid 16989] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16989] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16988] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16989] <... futex resumed>)        = 0
[pid 16989] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16989] <... futex resumed>)        = 0
[pid 16989] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16989] <... futex resumed>)        = 0
[pid 16989] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16988] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16989] <... futex resumed>)        = 0
[pid 16989] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16989] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16989] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16988] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16988] exit_group(0)               = ?
[pid 16989] <... futex resumed>)        = ?
[pid 16989] +++ exited with 0 +++
[pid 16988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16990 attached
, child_tidptr=0x55557060c690) = 16990
[pid 16990] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16990] setpgid(0, 0)               = 0
[pid 16990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16990] write(3, "1000", 4)         = 4
[pid 16990] close(3)                    = 0
[pid 16990] write(1, "executing program\n", 18executing program
) = 18
[pid 16990] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16990] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16990] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16990] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[16991]}, 88) = 16991
[pid 16990] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 16991 attached
 <unfinished ...>
[pid 16991] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16991] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16991] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16990] <... futex resumed>)        = 0
[pid 16990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16991] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16990] <... futex resumed>)        = 0
[pid 16991] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16991] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16991] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16990] <... futex resumed>)        = 0
[pid 16990] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16990] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16991] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16991] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16990] <... futex resumed>)        = 0
[pid 16990] exit_group(0)               = ?
[pid 16991] +++ exited with 0 +++
[pid 16990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16992 attached
, child_tidptr=0x55557060c690) = 16992
[pid 16992] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16992] setpgid(0, 0)               = 0
[pid 16992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16992] write(3, "1000", 4)         = 4
[pid 16992] close(3)                    = 0
executing program
[pid 16992] write(1, "executing program\n", 18) = 18
[pid 16992] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16992] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16992] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16992] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16992] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16992] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16992] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16993 attached
 => {parent_tid=[16993]}, 88) = 16993
[pid 16993] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16993] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16992] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16993] <... futex resumed>)        = 0
[pid 16993] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 16992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16993] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16993] <... futex resumed>)        = 0
[pid 16993] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16993] <... futex resumed>)        = 0
[pid 16992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16993] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16993] <... futex resumed>)        = 0
[pid 16993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16992] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16993] <... futex resumed>)        = 0
[pid 16992] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16993] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16993] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16993] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16992] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16992] exit_group(0)               = ?
[pid 16993] <... futex resumed>)        = ?
[pid 16993] +++ exited with 0 +++
[pid 16992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16994 attached
, child_tidptr=0x55557060c690) = 16994
[pid 16994] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16994] setpgid(0, 0)               = 0
[pid 16994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16994] write(3, "1000", 4)         = 4
executing program
[pid 16994] close(3)                    = 0
[pid 16994] write(1, "executing program\n", 18) = 18
[pid 16994] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16994] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16994] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16994] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16994] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16994] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16994] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16995 attached
 => {parent_tid=[16995]}, 88) = 16995
[pid 16994] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16995] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16995] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16995] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16994] <... futex resumed>)        = 0
[pid 16994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16995] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16995] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16994] <... futex resumed>)        = 0
[pid 16994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16995] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16995] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16994] <... futex resumed>)        = 0
[pid 16994] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16994] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16995] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16995] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16995] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16994] <... futex resumed>)        = 0
[pid 16994] exit_group(0)               = ?
[pid 16995] +++ exited with 0 +++
[pid 16994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 16996
./strace-static-x86_64: Process 16996 attached
[pid 16996] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16996] setpgid(0, 0)               = 0
[pid 16996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16996] write(3, "1000", 4)         = 4
[pid 16996] close(3)                    = 0
[pid 16996] write(1, "executing program\n", 18executing program
) = 18
[pid 16996] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16996] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16996] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16996] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16996] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16996] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16996] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16997 attached
 => {parent_tid=[16997]}, 88) = 16997
[pid 16997] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16997] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16996] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16997] <... futex resumed>)        = 0
[pid 16996] <... futex resumed>)        = 1
[pid 16997] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16997] <... futex resumed>)        = 0
[pid 16997] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16997] <... futex resumed>)        = 0
[pid 16997] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 16996] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16997] <... futex resumed>)        = 0
[pid 16997] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16997] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16996] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16997] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16996] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16996] exit_group(0)               = ?
[pid 16997] <... futex resumed>)        = ?
[pid 16997] +++ exited with 0 +++
[pid 16996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 16998 attached
, child_tidptr=0x55557060c690) = 16998
[pid 16998] set_robust_list(0x55557060c6a0, 24) = 0
[pid 16998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 16998] setpgid(0, 0)               = 0
[pid 16998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 16998] write(3, "1000", 4)         = 4
[pid 16998] close(3)                    = 0
executing program
[pid 16998] write(1, "executing program\n", 18) = 18
[pid 16998] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16998] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 16998] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 16998] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 16998] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 16998] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 16998] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 16999 attached
 => {parent_tid=[16999]}, 88) = 16999
[pid 16998] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16999] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 16999] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 16999] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 16999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 16998] <... futex resumed>)        = 0
[pid 16998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16999] <... futex resumed>)        = 1
[pid 16998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16999] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 16999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16999] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 16998] <... futex resumed>)        = 0
[pid 16998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16999] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 16999] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 16999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16998] <... futex resumed>)        = 0
[pid 16998] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 16998] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 16999] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 16999] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 16998] <... futex resumed>)        = 0
[pid 16998] exit_group(0)               = ?
[pid 16999] +++ exited with 0 +++
[pid 16998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=16998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 17000
./strace-static-x86_64: Process 17000 attached
[pid 17000] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17000] setpgid(0, 0)               = 0
[pid 17000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17000] write(3, "1000", 4)         = 4
[pid 17000] close(3)                    = 0
[pid 17000] write(1, "executing program\n", 18executing program
) = 18
[pid 17000] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17000] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17000] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17000] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17000] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17000] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17000] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17001 attached
 => {parent_tid=[17001]}, 88) = 17001
[pid 17001] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17001] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17001] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17000] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17001] <... futex resumed>)        = 0
[pid 17000] <... futex resumed>)        = 1
[pid 17001] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17001] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17001] <... futex resumed>)        = 0
[pid 17001] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17001] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17001] <... futex resumed>)        = 0
[pid 17000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17001] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17001] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17000] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17000] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17001] <... futex resumed>)        = 0
[pid 17001] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 17000] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17001] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 17001] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17001] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17000] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17000] exit_group(0)               = ?
[pid 17001] <... futex resumed>)        = ?
[pid 17001] +++ exited with 0 +++
[pid 17000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17002 attached
, child_tidptr=0x55557060c690) = 17002
[pid 17002] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17002] setpgid(0, 0)               = 0
[pid 17002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17002] write(3, "1000", 4)         = 4
[pid 17002] close(3executing program
)                    = 0
[pid 17002] write(1, "executing program\n", 18) = 18
[pid 17002] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17002] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17002] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17002] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17002] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17002] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17002] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17003 attached
 <unfinished ...>
[pid 17003] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17003] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17003] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17002] <... clone3 resumed> => {parent_tid=[17003]}, 88) = 17003
[pid 17002] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17003] <... futex resumed>)        = 0
[pid 17002] <... futex resumed>)        = 1
[pid 17003] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17003] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17003] <... futex resumed>)        = 0
[pid 17003] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17003] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17003] <... futex resumed>)        = 0
[pid 17002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17003] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17002] <... futex resumed>)        = 0
[pid 17002] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17002] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17003] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17003] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17003] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17002] <... futex resumed>)        = 0
[pid 17002] exit_group(0)               = ?
[pid 17003] <... futex resumed>)        = ?
[pid 17003] +++ exited with 0 +++
[pid 17002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17004 attached
, child_tidptr=0x55557060c690) = 17004
[pid 17004] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17004] setpgid(0, 0)               = 0
[pid 17004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17004] write(3, "1000", 4)         = 4
[pid 17004] close(3)                    = 0
[pid 17004] write(1, "executing program\n", 18executing program
) = 18
[pid 17004] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17004] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17004] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17004] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17004] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17004] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17004] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[17005]}, 88) = 17005
[pid 17004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 17005 attached
 <unfinished ...>
[pid 17005] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17005] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17005] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17004] <... futex resumed>)        = 0
[pid 17004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17005] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17005] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17004] <... futex resumed>)        = 0
[pid 17004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17005] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17005] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17004] <... futex resumed>)        = 0
[pid 17004] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17004] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17005] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17005] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17004] <... futex resumed>)        = 0
[pid 17004] exit_group(0)               = ?
[pid 17005] +++ exited with 0 +++
[pid 17004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17006 attached
, child_tidptr=0x55557060c690) = 17006
[pid 17006] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17006] setpgid(0, 0)               = 0
[pid 17006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17006] write(3, "1000", 4)         = 4
[pid 17006] close(3)                    = 0
[pid 17006] write(1, "executing program\n", 18executing program
) = 18
[pid 17006] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17006] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17006] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17006] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17006] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17006] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17006] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17007 attached
 => {parent_tid=[17007]}, 88) = 17007
[pid 17007] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17007] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17006] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17007] <... futex resumed>)        = 0
[pid 17006] <... futex resumed>)        = 1
[pid 17007] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17007] <... futex resumed>)        = 0
[pid 17007] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17006] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17007] <... futex resumed>)        = 0
[pid 17007] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17006] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17007] <... futex resumed>)        = 0
[pid 17006] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17007] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17007] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17007] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17006] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17006] exit_group(0)               = ?
[pid 17007] <... futex resumed>)        = ?
[pid 17007] +++ exited with 0 +++
[pid 17006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17008 attached
, child_tidptr=0x55557060c690) = 17008
[pid 17008] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17008] setpgid(0, 0)               = 0
[pid 17008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17008] write(3, "1000", 4)         = 4
[pid 17008] close(3)                    = 0
executing program
[pid 17008] write(1, "executing program\n", 18) = 18
[pid 17008] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17008] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17008] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17008] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17008] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17008] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17008] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17009 attached
 <unfinished ...>
[pid 17009] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 17008] <... clone3 resumed> => {parent_tid=[17009]}, 88) = 17009
[pid 17009] <... set_robust_list resumed>) = 0
[pid 17009] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17008] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17009] <... futex resumed>)        = 0
[pid 17008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17009] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17008] <... futex resumed>)        = 0
[pid 17008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17009] <... futex resumed>)        = 0
[pid 17008] <... futex resumed>)        = 1
[pid 17009] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17009] <... futex resumed>)        = 0
[pid 17008] <... futex resumed>)        = 1
[pid 17009] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 17008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17009] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 17009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17008] <... futex resumed>)        = 0
[pid 17009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17008] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17009] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17008] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17009] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17009] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17008] <... futex resumed>)        = 0
[pid 17009] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17008] exit_group(0)               = ?
[pid 17009] <... futex resumed>)        = ?
[pid 17009] +++ exited with 0 +++
[pid 17008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 17010
./strace-static-x86_64: Process 17010 attached
[pid 17010] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17010] setpgid(0, 0)               = 0
[pid 17010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17010] write(3, "1000", 4)         = 4
[pid 17010] close(3)                    = 0
[pid 17010] write(1, "executing program\n", 18executing program
) = 18
[pid 17010] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17010] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17010] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17010] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17011 attached
 => {parent_tid=[17011]}, 88) = 17011
[pid 17011] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17011] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17011] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17010] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17011] <... futex resumed>)        = 0
[pid 17011] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17011] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17011] <... futex resumed>)        = 0
[pid 17010] <... futex resumed>)        = 1
[pid 17011] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17011] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17011] <... futex resumed>)        = 0
[pid 17010] <... futex resumed>)        = 1
[pid 17011] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17011] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17010] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17011] <... futex resumed>)        = 0
[pid 17011] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 17010] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17011] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 17011] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17011] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17010] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17010] exit_group(0)               = ?
[pid 17011] <... futex resumed>)        = ?
[pid 17011] +++ exited with 0 +++
[pid 17010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17012 attached
, child_tidptr=0x55557060c690) = 17012
[pid 17012] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17012] setpgid(0, 0)               = 0
[pid 17012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17012] write(3, "1000", 4)         = 4
[pid 17012] close(3)                    = 0
[pid 17012] write(1, "executing program\n", 18executing program
) = 18
[pid 17012] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17012] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17012] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17012] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17012] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17012] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17012] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[17013]}, 88) = 17013
[pid 17012] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 17013 attached
 <unfinished ...>
[pid 17013] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17013] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17013] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17012] <... futex resumed>)        = 0
[pid 17012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17013] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17012] <... futex resumed>)        = 0
[pid 17012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17013] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17012] <... futex resumed>)        = 0
[pid 17012] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17012] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17013] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17013] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17012] <... futex resumed>)        = 0
[pid 17012] exit_group(0)               = ?
[pid 17013] +++ exited with 0 +++
[pid 17012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17014 attached
, child_tidptr=0x55557060c690) = 17014
[pid 17014] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17014] setpgid(0, 0)               = 0
[pid 17014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17014] write(3, "1000", 4)         = 4
[pid 17014] close(3)                    = 0
[pid 17014] write(1, "executing program\n", 18executing program
) = 18
[pid 17014] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17014] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17014] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17014] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17014] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17014] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17014] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17015 attached
 => {parent_tid=[17015]}, 88) = 17015
[pid 17014] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 17015] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17015] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17014] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 17014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17015] <... futex resumed>)        = 0
[pid 17014] <... futex resumed>)        = 1
[pid 17015] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17015] <... futex resumed>)        = 0
[pid 17015] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH <unfinished ...>
[pid 17014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17015] <... openat resumed>)       = -1 ENOENT (No such file or directory)
[pid 17015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17014] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17015] <... futex resumed>)        = 0
[pid 17015] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17014] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17014] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17015] <... futex resumed>)        = 0
[pid 17014] <... futex resumed>)        = 1
[pid 17015] write(-1, "0x0000000000000001", 18 <unfinished ...>
[pid 17014] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17015] <... write resumed>)        = -1 EBADF (Bad file descriptor)
[pid 17015] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17015] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17014] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17014] exit_group(0)               = ?
[pid 17015] <... futex resumed>)        = ?
[pid 17015] +++ exited with 0 +++
[pid 17014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17016 attached
, child_tidptr=0x55557060c690) = 17016
[pid 17016] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17016] setpgid(0, 0)               = 0
[pid 17016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17016] write(3, "1000", 4)         = 4
[pid 17016] close(3)                    = 0
executing program
[pid 17016] write(1, "executing program\n", 18) = 18
[pid 17016] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17016] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17016] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17016] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17016] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17016] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17016] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17017 attached
 <unfinished ...>
[pid 17017] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17017] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17017] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17016] <... clone3 resumed> => {parent_tid=[17017]}, 88) = 17017
[pid 17016] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17017] <... futex resumed>)        = 0
[pid 17017] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17017] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17017] <... futex resumed>)        = 0
[pid 17016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17017] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17016] <... futex resumed>)        = 0
[pid 17017] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 <unfinished ...>
[pid 17016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17017] <... openat resumed>)       = -1 EBADF (Bad file descriptor)
[pid 17017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17016] <... futex resumed>)        = 0
[pid 17016] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17016] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17017] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17017] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17016] <... futex resumed>)        = 0
[pid 17017] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17016] exit_group(0)               = ?
[pid 17017] <... futex resumed>)        = ?
[pid 17017] +++ exited with 0 +++
[pid 17016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17018 attached
, child_tidptr=0x55557060c690) = 17018
[pid 17018] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17018] setpgid(0, 0)               = 0
[pid 17018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17018] write(3, "1000", 4)         = 4
[pid 17018] close(3executing program
)                    = 0
[pid 17018] write(1, "executing program\n", 18) = 18
[pid 17018] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17018] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17018] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17018] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17018] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17018] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17018] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0} => {parent_tid=[17019]}, 88) = 17019
./strace-static-x86_64: Process 17019 attached
[pid 17019] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17018] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid 17019] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17018] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid 17018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17019] <... futex resumed>)        = 0
[pid 17019] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 17018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17019] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17019] <... futex resumed>)        = 0
[pid 17019] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17018] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17019] <... futex resumed>)        = 0
[pid 17019] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17018] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17019] <... futex resumed>)        = 0
[pid 17018] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17019] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17019] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17018] <... futex resumed>)        = 0
[pid 17019] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17018] exit_group(0)               = ?
[pid 17019] <... futex resumed>)        = ?
[pid 17019] +++ exited with 0 +++
[pid 17018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 17020 attached
, child_tidptr=0x55557060c690) = 17020
[pid 17020] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17020] setpgid(0, 0)               = 0
[pid 17020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17020] write(3, "1000", 4)         = 4
[pid 17020] close(3)                    = 0
executing program
[pid 17020] write(1, "executing program\n", 18) = 18
[pid 17020] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17020] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17020] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17020] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17020] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17020] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17020] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17021 attached
 => {parent_tid=[17021]}, 88) = 17021
[pid 17020] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17021] set_robust_list(0x7f1dfc5f59a0, 24 <unfinished ...>
[pid 17020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid 17021] <... set_robust_list resumed>) = 0
[pid 17021] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17021] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7 <unfinished ...>
[pid 17020] <... futex resumed>)        = 0
[pid 17021] <... bpf resumed>, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17021] <... futex resumed>)        = 0
[pid 17021] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17020] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid 17020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17021] <... futex resumed>)        = 0
[pid 17021] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17020] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17021] <... futex resumed>)        = 0
[pid 17020] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid 17021] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17021] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17020] <... futex resumed>)        = 0
[pid 17021] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17020] exit_group(0)               = ?
[pid 17021] <... futex resumed>)        = ?
[pid 17021] +++ exited with 0 +++
[pid 17020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557060c690) = 17022
./strace-static-x86_64: Process 17022 attached
[pid 17022] set_robust_list(0x55557060c6a0, 24) = 0
[pid 17022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 17022] setpgid(0, 0)               = 0
[pid 17022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 17022] write(3, "1000", 4)         = 4
[pid 17022] close(3)                    = 0
[pid 17022] write(1, "executing program\n", 18executing program
) = 18
[pid 17022] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17022] rt_sigaction(SIGRT_1, {sa_handler=0x7f1dfc65a5a0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f1dfc64bc20}, NULL, 8) = 0
[pid 17022] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid 17022] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f1dfc5d5000
[pid 17022] mprotect(0x7f1dfc5d6000, 131072, PROT_READ|PROT_WRITE) = 0
[pid 17022] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid 17022] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f1dfc5f5990, parent_tid=0x7f1dfc5f5990, exit_signal=0, stack=0x7f1dfc5d5000, stack_size=0x20300, tls=0x7f1dfc5f56c0}./strace-static-x86_64: Process 17023 attached
 => {parent_tid=[17023]}, 88) = 17023
[pid 17023] set_robust_list(0x7f1dfc5f59a0, 24) = 0
[pid 17023] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17022] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid 17022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17023] <... futex resumed>)        = 0
[pid 17023] bpf(BPF_TASK_FD_QUERY, {task_fd_query={pid=0, fd=-1, flags=0, buf_len=7, buf="cgroup", prog_id=0, fd_type=BPF_FD_TYPE_RAW_TRACEPOINT, probe_offset=0, probe_addr=0}}, 48) = -1 ENOENT (No such file or directory)
[pid 17023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17023] <... futex resumed>)        = 0
[pid 17023] openat(AT_FDCWD, "cgroup", O_RDWR|O_PATH) = -1 ENOENT (No such file or directory)
[pid 17023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17023] <... futex resumed>)        = 0
[pid 17023] openat(-1, "cgroup.freeze", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = -1 EBADF (Bad file descriptor)
[pid 17023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17022] futex(0x7f1dfc6be3e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid 17023] <... futex resumed>)        = 0
[pid 17023] write(-1, "0x0000000000000001", 18) = -1 EBADF (Bad file descriptor)
[pid 17023] futex(0x7f1dfc6be3ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid 17023] futex(0x7f1dfc6be3e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid 17022] futex(0x7f1dfc6be3ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid 17022] exit_group(0)               = ?
[pid 17023] <... futex resumed>)        = ?
[pid 17023] +++ exited with 0 +++
[pid 17022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---